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#!/bin/bash |
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# Licence: GPLv3, MIT, BSD, Apache or whatever you prefer; FREE to use, modify, copy, no obligations |
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# Description: Bash Script to Start the process with NOHUP and & - in background, pretend to be a Daemon |
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# Author: Andrew Bikadorov |
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# Script v1.5 |
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# For debugging purposes uncomment next line |
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#set -x |
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# Config, can be altered |
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APP_NAME="Ghost" |
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APP_FILENAME="ghost" |
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APP_PID="/var/run/$APP_FILENAME.pid" |
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APP_PATH="/opt/ghost" |
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APP_FILE=$APP_FILENAME".jar" |
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APP_LOGS=$APP_PATH"/logs" |
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#for example: APP_PRE_OPTION="java -jar" |
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APP_PRE_OPTION="" |
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APP_POST_OPTION="" |
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# Should Not Be altered |
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TMP_FILE="/tmp/status_$APP_FILENAME" |
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### For internal usage |
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STATUS_CODE[0]="Is Running" |
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STATUS_CODE[1]="Not Running" |
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STATUS_CODE[2]="Stopped incorrectly" |
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STATUS_CODE[9]="Default Status, should not be seen" |
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## nohup sleep 30 > ghost.out 2> ghost.err < /dev/null & echo $! |
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## nohup java -jar /opt/ghost/ghost.jar > /opt/ghost/logs/ghost.out 2> /opt/ghost/logs/ghost.err & |
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## echo $! > /var/run/ghost.pid |
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#echo "Starting ecolog ..." |
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#eval "$JSVC -nodetach -pidfile $PID -home $HOME -user $USER $OPTIONS -cp $CLASSPATH $CLASS >>/dev/null 2>&1 &" |
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#RETVAL=$? |
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#echo "done" |
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start() { |
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checkpid |
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STATUS=$? |
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if [ $STATUS -ne 0 ] ; |
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then |
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echo "Starting $APP_NAME..." |
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## java –jar $APP_PATH/ghost.jar |
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nohup $APP_PRE_OPTION $APP_PATH/$APP_FILE $APP_POST_OPTION > $APP_LOGS/$APP_FILENAME.out 2> $APP_LOGS/$APP_FILENAME.err < /dev/null & |
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# You can un-comment next line to see what command is exactly executed |
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# echo "nohup $APP_PRE_OPTION $APP_PATH/$APP_FILE $APP_POST_OPTION > $APP_LOGS/$APP_FILENAME.out 2> $APP_LOGS/$APP_FILENAME.err < /dev/null &" |
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echo PID $! |
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echo $! > $APP_PID |
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statusit |
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#echo "Done" |
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else |
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echo "$APP_NAME Already Running" |
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fi |
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} |
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stop() { |
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checkpid |
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STATUS=$? |
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if [ $STATUS -eq 0 ] ; |
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then |
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echo "Stopping $APP_NAME..." |
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kill `cat $APP_PID` |
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rm $APP_PID |
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statusit |
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#echo "Done" |
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else |
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echo "$APP_NAME - Already killed" |
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fi |
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} |
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checkpid(){ |
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STATUS=9 |
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if [ -f $APP_PID ] ; |
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then |
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#echo "Is Running if you can see next line with $APP_NAME" |
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ps -Fp `cat $APP_PID` | grep $APP_FILE > $TMP_FILE |
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if [ -f $TMP_FILE -a -s $TMP_FILE ] ; |
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then |
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STATUS=0 |
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#"Is Running (PID `cat $APP_PID`)" |
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else |
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STATUS=2 |
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#"Stopped incorrectly" |
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fi |
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## Clean after yourself |
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rm -f $TMP_FILE |
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else |
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STATUS=1 |
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#"Not Running" |
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fi |
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return $STATUS |
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} |
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statusit() { |
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#TODO |
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#status -p $APP_PID ghost |
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checkpid |
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#GET return value from previous function |
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STATUS=$? |
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#echo $? |
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EXITSTATUS=${STATUS_CODE[STATUS]} |
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if [ $STATUS -eq 0 ] ; |
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then |
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EXITSTATUS=${STATUS_CODE[STATUS]}" (PID `cat $APP_PID`)" |
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fi |
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#echo "First Index: ${NAME[0]}" |
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#echo "Second Index: ${NAME[1]}" |
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echo $APP_NAME - $EXITSTATUS |
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#${STATUS_CODE[STATUS]} |
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} |
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case "$1" in |
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'start') |
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start |
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;; |
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'stop') |
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stop |
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;; |
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'restart') |
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stop |
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start |
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;; |
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'status') |
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statusit |
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;; |
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*) |
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echo "Usage: $0 { start | stop | restart | status }" |
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exit 1 |
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;; |
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esac |
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exit 0 |
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