639 lines
13 KiB
Bash
Executable File
639 lines
13 KiB
Bash
Executable File
#!/usr/bin/env bash
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script_name="$(basename $(realpath $0))"
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working_dir="$(dirname $(realpath $0))"
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conf_file="${working_dir}/conf/${script_name%%.*}.conf"
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LOCK_DIR="/tmp/${script_name%%.*}.LOCK"
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log_file="${LOCK_DIR}/${script_name%%.*}.log"
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# Sending alert messages
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#
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declare -a alert_email_arr=()
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backup_date="$(date +%Y-%m-%d-%H%M)"
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declare -a files_backuped_arr=()
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declare -a dirs_backuped_arr=()
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# ----------
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# Base Function(s)
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# ----------
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usage() {
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[[ -n "$1" ]] && error "$1"
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[[ $terminal ]] && echo -e "
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\033[1mUsage:\033[m
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$(basename $0) [OPTION [OPTION ..
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\033[1mDescription\033[m
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<Some Description>
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\033[1mOptions\033[m
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<List Options>
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\033[1mFiles\033[m
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$conf_file: Configuration file
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\033[1mExample:\033[m
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<description example>
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$(basename $0) .. <comand example>
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<description another example>
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$(basename $0) .. <command another example>
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"
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clean_up 1
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}
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clean_up() {
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# Perform program exit housekeeping
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rm -rf "$LOCK_DIR"
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blank_line
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exit $1
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}
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echononl(){
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if $terminal ; then
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echo X\\c > /tmp/shprompt$$
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if [ `wc -c /tmp/shprompt$$ | awk '{print $1}'` -eq 1 ]; then
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echo -e -n " $*\\c" 1>&2
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else
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echo -e -n " $*" 1>&2
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fi
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rm /tmp/shprompt$$
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fi
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}
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fatal(){
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echo ""
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if $terminal ; then
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echo -e " [ \033[31m\033[1mFatal\033[m ]: $*"
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echo ""
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echo -e " \033[31m\033[1mScript was interupted\033[m!"
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else
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echo " [ Fatal ]: $*"
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echo ""
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echo " Script was terminated...."
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fi
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echo ""
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clean_up 1
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}
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error (){
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echo ""
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if $terminal ; then
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echo -e " [ \033[31m\033[1mError\033[m ]: $*"
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else
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echo "[ Error ]: $*"
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fi
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echo ""
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}
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warn (){
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echo ""
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if $terminal ; then
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echo -e " [ \033[33m\033[1mWarning\033[m ]: $*"
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else
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echo "[ Warning ]: $*"
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fi
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echo ""
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}
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warn_only_terminal () {
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if $terminal ; then
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echo ""
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echo -e "\t[ \033[33m\033[1mWarning\033[m ]: $*"
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echo ""
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fi
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}
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info (){
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if $terminal ; then
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echo ""
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echo -e " [ \033[32m\033[1mInfo\033[m ] $*"
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echo ""
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fi
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}
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ok (){
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if $terminal ; then
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echo ""
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echo -e " [ \033[32m\033[1mOk\033[m ] $*"
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echo ""
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fi
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}
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echo_done() {
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if $terminal ; then
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echo -e "\033[75G[ \033[32mdone\033[m ]"
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fi
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}
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echo_ok() {
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if $terminal ; then
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echo -e "\033[75G[ \033[32mok\033[m ]"
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fi
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}
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echo_warn() {
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if $terminal ; then
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echo -e "\033[75G[ \033[33mwarn\033[m ]"
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fi
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}
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echo_failed(){
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if $terminal ; then
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echo -e "\033[75G[ \033[1;31mfailed\033[m ]"
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fi
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}
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echo_skipped() {
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if $terminal ; then
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echo -e "\033[75G[ \033[90m\033[1mskipped\033[m ]"
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fi
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}
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echo_wait(){
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if $terminal ; then
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echo -en "\033[75G[ \033[5m\033[1m...\033[m ]"
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fi
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}
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trim() {
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local var="$*"
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var="${var#"${var%%[![:space:]]*}"}" # remove leading whitespace characters
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var="${var%"${var##*[![:space:]]}"}" # remove trailing whitespace characters
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echo -n "$var"
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}
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blank_line() {
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if $terminal ; then
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echo ""
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fi
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}
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is_number() {
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return $(test ! -z "${1##*[!0-9]*}" > /dev/null 2>&1);
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# - also possible
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# -
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#[[ ! -z "${1##*[!0-9]*}" ]] && return 0 || return 1
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#return $([[ ! -z "${1##*[!0-9]*}" ]])
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}
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reboot_system() {
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# content_type='Content-Type: text/plain;\n charset="utf-8"'
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# datum="$(date +"%d.%m.%Y")"
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# sender_address="root@$(hostname --long)"
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# msg="S*"
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#
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#
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# for _email in ${alert_email_arr[@]} ; do
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#
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# echo -e "To:${_email}\n${content_type}\nSubject:[Fatal Error] - Reboot System\n${msg}" \
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# | sendmail -F "Error `hostname -f`" -f $sender_address $_email
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# done
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sleep 10
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/sbin/reboot -f > /dev/null 2>&1
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}
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# - Backup file or directory
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# -
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backup() {
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is_directory=false
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if [[ -z "$1" ]] ; then
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error "No file/directory for backup given!"
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return
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elif [[ -h "$1" ]] ; then
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_source="$(realpath $1)"
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warn "'$1' is a symlink to $_source."
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elif [[ ! -d "$1" ]] && [[ ! -f "$1" ]] ; then
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warn "'$1' not found. Backup skipped."
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return
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else
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_source="$(realpath $1)"
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fi
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if [[ -d "$_source" ]]; then
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is_directory=true
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echononl "Backup directory '$_source' .."
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else
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echononl "Backup file '$_source' .."
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fi
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cp -a "$_source" "${_source}.$backup_date" > $log_file 2>&1
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if [[ $? -eq 0 ]] ; then
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echo_ok
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if $is_directory ; then
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dirs_backuped_arr+=("$_source")
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else
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files_backuped_arr+=("$_source")
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fi
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else
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echo_failed
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error "$(cat "$log_file")"
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fi
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}
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# - Remove script generated backups, if source wasn't changed
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# -
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rm_unchanged_backup() {
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if [[ ${#files_backuped_arr[@]} -gt 0 ]] ; then
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for _file in "${files_backuped_arr[@]}" ; do
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if $(diff "$_file" "${_file}.$backup_date" > /dev/null 2>&1) ; then
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echononl "File '$(basename "${_file}")' wasn't changed.\n Delete the previous generated backup. .."
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rm "${_file}.$backup_date" > "$log_file" 2>&1
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if [[ $? -eq 0 ]]; then
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echo_ok
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else
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echo_failed
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error "$(cat "$log_file")"
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fi
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blank_line
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fi
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done
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fi
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if [[ ${#dirs_backuped_arr[@]} -gt 0 ]] ; then
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for _dir in "${dirs_backuped_arr[@]}" ; do
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if $(diff -Nur "$_dir" "${_dir}.$backup_date" > /dev/null 2>&1) ; then
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echononl "Directory '$(basename "${_dir}")' wasn't changed.\n Delete the previous generated backup. .."
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rm -rf "${_dir}.$backup_date" > "$log_file" 2>&1
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if [[ $? -eq 0 ]]; then
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echo_ok
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else
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echo_failed
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error "$(cat "$log_file")"
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fi
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blank_line
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fi
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done
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fi
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}
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# ----------
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# - Some checks ..
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# ----------
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# - Running in a terminal?
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# -
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if [[ -t 1 ]] ; then
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terminal=true
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else
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terminal=false
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fi
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# -Is systemd supported on this system?
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# -
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systemd_supported=false
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systemd=$(which systemd)
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systemctl=$(which systemctl)
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if [[ -n "$systemd" ]] && [[ -n "$systemctl" ]] ; then
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systemd_supported=true
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fi
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# - Print help?
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# -
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if [[ "$(trim $*)" = "-h" ]] || [[ "$(trim $*)" = "--help" ]] ; then
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usage
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fi
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if [[ -z "$(which basename)" ]]; then
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fatal 'It seems "basename" is not installed, but needed!'
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fi
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if [[ -z "$(which realpath)" ]]; then
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fatal 'It seems "realpath" is not installed, but needed!'
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fi
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# ==========
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# - Begin Main Script
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# ==========
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# ----------
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# - Headline
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# ----------
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if $terminal ; then
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echo ""
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echo -e "\033[1m----------\033[m"
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echo -e "\033[32m\033[1mRunning script \033[m\033[1m$script_name\033[32m .. \033[m"
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echo -e "\033[1m----------\033[m"
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fi
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# ----------
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# Read Configurations from $conf_file
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# ----------
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# - Give your default values here
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# -
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BATCH_MODE=false
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PARAMETER_1="WERT_1"
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PARAMETER_2="WERT_2"
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DEFAULT_CONFLICTING_SCRIPTS=""
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DEFAULT_COMPANY="O.OPEN"
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DEFAULT_CONTENT_TYPE='Content-Type: text/plain;\n charset="utf-8"'
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DEFAULT_SENDER_ADDRESS="${script_name%%.*}@$(hostname -f)"
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DEFAULT_ALERT_EMAIL_ADDRESSES="ckubu@oopen.de"
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if [[ -f "$conf_file" ]]; then
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source "$conf_file"
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else
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warn_only_terminal "No configuration file '$conf_file' present.\n
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Loading default values.."
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fi
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# ----------
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# - Read commandline parameter
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# ----------
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while getopts bh opt ; do
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case $opt in
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b) BATCH_MODE=true
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;;
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h) usage
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;;
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\?) usage ;;
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esac
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done
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# ----------
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# - Read in parameters given by user
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# ----------
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if $terminal && ! $BATCH_MODE ; then
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echo ""
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echo ""
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echo -e " \033[1mRead in parameters given by user ..\033[m"
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echo ""
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echo ""
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echo -e "\033[32m--\033[m"
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echo ""
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echo " PARAMETER 1 ...."
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echo ""
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echo -e " Type \033[33m<return>\033[m to accept the default."
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echo ""
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echo ""
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_PARAMETER_1=$PARAMETER_1
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PARAMETER_1=""
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echononl "PARAMETER 1 [\033[1m$_PARAMETER_1\033[m]: "
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read PARAMETER_1
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if [[ -z "$PARAMETER_1" ]] ; then
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PARAMETER_1=$_PARAMETER_1
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fi
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echo ""
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echo -e "\033[32m--\033[m"
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echo ""
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echo " Blank separated list of PARAMETER 2"
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echo ""
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if [[ -n "$PARAMETER_2" ]]; then
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echo -e " Type \033[33m<return>\033[m to accept the default."
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echo ""
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echo ""
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_PARAMETER_2=$PARAMETER_2
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PARAMETER_2=""
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echononl "PARAMETER 2 [\033[1m$_PARAMETER_2\033[m]: "
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read PARAMETER_2
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if [[ -z "$PARAMETER_2" ]] ; then
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PARAMETER_2=$_PARAMETER_2
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fi
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else
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echo ""
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echononl "\033[1mPARAMETER 2:\033[m "
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read PARAMETER_2
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while [[ -z "$(trim "$PARAMETER_2")" ]]; do
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echo "Entry for PARAMETER 2 is required! Try again.."
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echononl "\033[1mPARAMETER 2: \033[m"
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read PARAMETER_2
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done
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fi
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echo ""
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echo ""
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echo -e " \033[32m\033[1mParameter Summary:\033[m"
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echo ""
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echo " PARAMETER 1................: $PARAMETER_1"
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echo " PARAMETER 2................: $PARAMETER_2"
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echo ""
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echononl "Continue with this parameters? [\033[1myes/no\033[m]: "
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read OK
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while [[ "${OK,,}" != "yes" ]] && [[ "${OK,,}" != "no" ]] ; do
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echononl "\033[33mWrong entry!\033[m [\033[1myes/no\033[m]: "
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read OK
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done
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[[ "${OK,,}" = "yes" ]] || fatal "Canceled by user input."
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fi
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# ----------
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# Set Parameter values
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# ----------
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[[ -n "$CONFLICTING_SCRIPTS" ]] || CONFLICTING_SCRIPTS="${DEFAULT_CONFLICTING_SCRIPTS}"
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[[ -n "$(trim $alert_email_addresses)" ]] || alert_email_addresses=("${DEFAULT_ALERT_EMAIL_ADDRESSES[@]}")
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if [[ ${#alert_email_addresses} -gt 0 ]] ; then
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for _email in $alert_email_addresses ; do
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alert_email_arr+=("$_email")
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done
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fi
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[[ -n "$sender_address" ]] || sender_address="${DEFAULT_SENDER_ADDRESS}"
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[[ -n "$content_type" ]] || content_type="${DEFAULT_CONTENT_TYPE}"
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[[ -n "$company" ]] || company="${DEFAULT_COMPANY}"
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# -------------
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# - Job is already running?
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# -------------
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# - If job already runs, stop execution..
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# -
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if mkdir "$LOCK_DIR" 2> /dev/null ; then
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## - Remove lockdir when the script finishes, or when it receives a signal
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trap "clean_up 1" SIGHUP SIGINT SIGTERM
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else
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datum="$(date +"%d.%m.%Y %H:%M")"
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msg="[ Error ]: A previos instance of \"`basename $0`\" seems already be running.\n\n Exiting now.."
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echo ""
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echo "[ Error ]: A previos instance of that script \"`basename $0`\" seems already be running."
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echo ""
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echo -e " Exiting now.."
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echo ""
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for _email in ${alert_email_arr[@]} ; do
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echo -e "To:${_email}\n${content_type}\nSubject:Error cronjob `basename $0` -- $datum\n${msg}\n" \
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| sendmail -F "Error `hostname -f`" -f $sender_address $_email
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done
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exit 1
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fi
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## ----------
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## - Jobhandling
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## ----------
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#
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#LOCK_DIR="/tmp/${script_name%%.*}.$$.LOCK"
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#
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## - Run 'clean_up' for signals SIGHUP SIGINT SIGTERM
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## -
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#trap clean_up SIGHUP SIGINT SIGTERM
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#
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## - Create lock directory '$LOCK_DIR"
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##
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#mkdir "$LOCK_DIR"
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# ----------
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# - Stop here, if these give scripts are running
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# ----------
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if [[ ${#CONFLICTING_SCRIPTS} -gt 0 ]] ; then
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# - Try using a random start delay to prevent (or at least have a small chance) that
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# - conflicting scripts will both/all abort if they start at the same time.
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# -
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# - !! Notice !!
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# - This only makes sense if a fixed LOCK directory is used, otherwise the process list
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# - (and NOT the LOCK-directory) is used to look for scripts running in parallel.
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# -
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# - Skip delay if running in an terminal (from copnsole)
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# -
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if ! $terminal ; then
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if [[ "$LOCK_DIR" = "/tmp/${script_name%%.*}.LOCK" ]]; then
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_shift="$(( $RANDOM % 10 + 1 ))"
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sleep $(( $RANDOM % 25 + $_shift ))
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fi
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fi
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_stop_running=false
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for _val in $CONFLICTING_SCRIPTS ; do
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IFS=':' read -a _val_arr <<< "${_val}"
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_script_name="$(basename ${_val_arr[0]})"
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if [[ -n "${_val_arr[1]}" ]] ; then
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if [[ "${_val_arr[1]}" = "CHECK_PROCESS_LIST" ]] ; then
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check_string_ps="${_val_arr[0]}"
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if ps -e f | grep -E "\s+${check_string_ps}" | grep -v grep | grep -v -E "\s+vim\s+" > /dev/null ; then
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_stop_running=true
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fi
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elif [[ -d "${_val_arr[1]}" ]] ; then
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_stop_running=true
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fi
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elif [[ -d "/tmp/${_script_name%%.*}.LOCK" ]]; then
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_stop_running=true
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fi
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|
|
|
if $_stop_running ; then
|
|
|
|
warn_only_terminal "\033[1m${_script_name}\033[m is currently running, but it conflicts with this script.
|
|
|
|
Exiting now.."
|
|
|
|
clean_up 1
|
|
|
|
fi # if $_stop_running ; then
|
|
|
|
done # for _val in $CONFLICTING_SCRIPTS ; do
|
|
|
|
fi # if [[ ${#CONFLICTING_SCRIPTS} -gt 0 ]] ; then
|
|
|
|
|
|
# ----------
|
|
# - Some pre-script tasks ..
|
|
# ----------
|
|
|
|
if $terminal ; then
|
|
echo ""
|
|
echo ""
|
|
echo -e " \033[1mDoing some pre-script tasks ..\033[m"
|
|
echo ""
|
|
fi
|
|
|
|
echononl "-- All is fine --"
|
|
echo_ok
|
|
|
|
|
|
# ----------
|
|
# - Main part of script
|
|
# ----------
|
|
|
|
if $terminal ; then
|
|
echo ""
|
|
echo ""
|
|
echo -e " \033[1mMain part of script ..\033[m"
|
|
echo ""
|
|
fi
|
|
|
|
|
|
# ----------
|
|
# - Some post-script tasks ..
|
|
# ----------
|
|
|
|
if $terminal ; then
|
|
echo ""
|
|
echo ""
|
|
echo -e " \033[1mDoing some post-script tasks ..\033[m"
|
|
echo ""
|
|
fi
|
|
|
|
|
|
# - Remove generated backup file if source wasn't changed.
|
|
# -
|
|
rm_unchanged_backup
|
|
|
|
clean_up 0
|