267 lines
6.7 KiB
Bash
Executable File
267 lines
6.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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check_string_ps=""
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if [[ -x /usr/lib/postfix/sbin/master ]]; then
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check_string_ps="/usr/lib/postfix/sbin/master"
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elif [[ -x "/usr/lib/postfix/master" ]] ; then
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check_string_ps="/usr/lib/postfix/master"
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elif [[ -x "/usr/libexec/postfix/master" ]] ; then
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check_string_ps="/usr/libexec/postfix/master"
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fi
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postfix_init_script=""
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if [[ -x "/etc/init.d/postfix" ]] ; then
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postfix_init_script="/etc/init.d/postfix"
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fi
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LOCK_DIR=`mktemp -d`
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#---------------------------------------
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#-----------------------------
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# Base Function(s)
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#-----------------------------
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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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else
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echo -e " [ Fatal ] $*"
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fi
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echo ""
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if $terminal ; then
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echo -e " \033[1mScript terminated\033[m.."
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else
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echo -e " Script terminated.."
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fi
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echo ""
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rm -rf $LOCK_DIR
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exit 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[1mWarn\033[m ] $*"
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else
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echo " [ Warn ] $*"
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fi
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echo ""
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}
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info (){
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echo ""
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if $terminal ; then
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echo -e " [ \033[32m\033[1mInfo\033[m ] $*"
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else
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echo " [ Info ] $*"
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fi
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echo ""
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}
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ok (){
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echo ""
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if $terminal ; then
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echo -e " [ \033[32m\033[1mOk\033[m ] $*"
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else
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echo " [ Ok ] $*"
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fi
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echo ""
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}
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detect_os () {
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if $(which lsb_release > /dev/null 2>&1) ; then
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os_dist="$(lsb_release -i | awk '{print tolower($3)}')"
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os_version="$(lsb_release -r | awk '{print tolower($2)}')"
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os_codename="$(lsb_release -c | awk '{print tolower($2)}')"
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if [[ "$os_dist" = "debian" ]]; then
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if $(echo "$os_version" | grep -q '\.') ; then
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os_version=$(echo "$os_version" | cut --delimiter='.' -f1)
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fi
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fi
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elif [[ -e "/etc/os-release" ]]; then
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. /etc/os-release
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os_dist=$ID
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os_version=${VERSION_ID}
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fi
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# remove whitespace from os_dist and os_version
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os_dist="${os_dist// /}"
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os_version="${os_version// /}"
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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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#---------------------------------------
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#-----------------------------
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# Check some prerequisites
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#-----------------------------
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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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LOGGING=true
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else
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terminal=false
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LOGGING=false
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fi
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if [[ -z $check_string_ps ]]; then
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fatal "$(basename $0): Postfix seems NOT to be installed"
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fi
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# - Systemd supported ?
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# -
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systemd=$(which systemd)
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systemctl=$(which systemctl)
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systemd_supported=false
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if [[ -n "$systemd" ]] && [[ -n "$systemctl" ]] ; then
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systemd_supported=true
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else
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if [[ ! -x $postfix_init_script ]]; then
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fatal "$(basename $0): Missing Postfix Init-Script!"
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fi
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fi
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# - Detect linux distribution
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# -
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detect_os
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#---------------------------------------
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#-----------------------------
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# Check if Postfix Mailservice is running
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#-----------------------------
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#---------------------------------------
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if $LOGGING ; then
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echo -e "\n Check if Postfix Mailservice is running.."
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echo -e " ========================================="
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fi
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if ! ps -e f | grep -E "[[:digit:]]\ ${check_string_ps}" | grep -v grep > /dev/null ; then
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error "Postfix Mailservice seems to be down! Trying to restart service now.."
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if $systemd_supported ; then
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$systemctl daemon-reload > /dev/null 2> ${LOCK_DIR}/err_msg.log
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if [[ $? -ne 0 ]]; then
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error "$(cat ${LOCK_DIR}/err_msg.log)"
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fi
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sleep 2
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# - Don't Start/Stop Services if package management is running (apt,aptitude,dpkg)
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# -
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if ( [[ "${os_dist,,}" = "debian" ]] || [[ "${os_dist,,}" = "ubuntu" ]] ) \
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&& $(lsof /var/lib/dpkg/lock >/dev/null 2>&1) ; then
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warn "It seems that package management (apt,dpkg) is running. Exiting restarting the service .."
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else
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$systemctl stop postfix > /dev/null 2> ${LOCK_DIR}/err_msg.log
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if [[ $? -ne 0 ]]; then
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error "$(cat ${LOCK_DIR}/err_msg.log)"
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fi
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sleep 10
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# - Don't Start/Stop Services if package management is running (apt,aptitude,dpkg)
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# -
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if ( [[ "${os_dist,,}" = "debian" ]] || [[ "${os_dist,,}" = "ubuntu" ]] ) \
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&& $(lsof /var/lib/dpkg/lock >/dev/null 2>&1) ; then
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warn "It seems that package management (apt,dpkg) is running. Omit starting the service .."
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else
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$systemctl start postfix > /dev/null 2> ${LOCK_DIR}/err_msg.log
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if [[ $? -ne 0 ]]; then
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error "$(cat ${LOCK_DIR}/err_msg.log)"
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fi
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fi
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fi
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else
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# - Don't Start/Stop Services if package management is running (apt,aptitude,dpkg)
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# -
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if ( [[ "${os_dist,,}" = "debian" ]] || [[ "${os_dist,,}" = "ubuntu" ]] ) \
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&& $(lsof /var/lib/dpkg/lock >/dev/null 2>&1) ; then
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warn "It seems that package management (apt,dpkg) is running - Exiting restarting the service .."
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else
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$postfix_init_script stop > /dev/null 2>&1
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if [[ $? -ne 0 ]]; then
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error "Stopping Postfix Mailservice failed!"
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fi
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sleep 10
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# - Don't Start/Stop Services if package management is running (apt,aptitude,dpkg)
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# -
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if ( [[ "${os_dist,,}" = "debian" ]] || [[ "${os_dist,,}" = "ubuntu" ]] ) \
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&& $(lsof /var/lib/dpkg/lock >/dev/null 2>&1) ; then
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warn "It seems that package management (apt,dpkg) is running. Omit starting the service .."
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else
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$postfix_init_script start > /dev/null 2>&1
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if [[ $? -ne 0 ]]; then
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error "Starting Postfix Mailservice failed!"
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fi
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fi
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fi
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fi
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declare -i counter=0
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PID=$(ps -e f | grep -E "[[:digit:]]\ ${check_string_ps}"| grep -v grep | awk '{print$2}')
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while [[ "X${PID}" = "X" ]]; do
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sleep 1
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PID=$(ps -e f | grep -E "[[:digit:]]\ ${check_string_ps}"| grep -v grep | awk '{print$2}')
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if [[ $counter -gt 10 ]]; then
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break
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else
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((counter++))
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fi
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done
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if [[ "X${PID}" = "X" ]] ; then
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error "Restarting Postfix Mailservice failed!"
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else
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ok "Postfix Mailservice is up and running."
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fi
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else
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if $LOGGING ; then
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ok "Postfix Mailservice is up and running."
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fi
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fi
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rm -rf $LOCK_DIR
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exit 0
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