Shell script to capture Process ID and kill it if exist

Question

I tried this code and it is not working     bin sh   Find the Process ID for syncapp running instance  PID  ps -ef   grep syncapp  awk  print  2     if    -z   PID     then Kill -9 PID fi   It is showing a error near awk   Any suggestions please

User · Answer

A lot of  NIX systems also have either or both pkill 1  and killall 1  which  allows you to kill processes by name  Using them  you can avoid the whole parsing ps problem

User · Answer

Came across somewhere  thought it is simple and useful  You can use the command in crontab directly              ps -lf   grep  user     perl -ane    h  m  s    split      F   13   kill 9   F 3  if   h  gt  1      or  we can write it as shell script       bin sh   longprockill sh ps -lf   grep  user     perl -ane    h  m  s    split      F 13   kill   9   F 3  if   h  gt  1      And call it crontab like so             longprockill sh

User · Answer

bin sh   Find the Process ID for syncapp running instance  PID  ps -ef   grep syncapp  awk  print  2     if    -z   PID     then --- gt     Kill -9 PID fi   Not sure if this helps  but  kill  is not spelled correctly  It s capitalized   Try  kill  instead

User · Answer

You probably wanted to write   ps -ef   grep syncapp   awk   print  2      but I will endorse  PaulR s answer - killall -9 syncapp is a much better alternative

User · Answer

Actually the easiest way to do that would be to pass kill arguments like below   ps -ef   grep your process name   grep -v grep   awk   print  2     xargs kill   Hope it helps

User · Answer

Try the following script      bin bash pgrep  1 2 gt  amp 1  gt   dev null if      -eq 0   then       echo     1  PROCESS RUNNING       ps -ef   grep  1   grep -v grep   awk   print  2    xargs kill -9   else       echo    NO  1 PROCESS RUNNING    fi

User · Answer

This should kill all processes matching the grep that you are permitted to kill   -9 means  Kill all processes you can kill    kill -9   ps -ef   grep  s yncapp   awk   print  2

User · Answer

I use the command pkill for this   NAME        pgrep  pkill - look up or signal processes based on name and         other attributes  SYNOPSIS        pgrep  options  pattern        pkill  options  pattern  DESCRIPTION        pgrep looks through the currently running processes and lists         the process IDs which match the selection criteria to stdout         All the criteria have to match   For example                   pgrep -u root sshd         will only list the processes called sshd AND owned by root         On the other hand                   pgrep -u root daemon         will list the processes owned by root OR daemon          pkill will send the specified signal  by default SIGTERM          to each process instead of listing them on stdout    If your code runs via interpreter  java  python       then the name of the process is the name of the interpreter  You need to user the argument --full  This matches against the command name and the arguments

User · Answer

PID  ps -ef   grep syncapp  awk  print  2     if    -z   PID     then   Kill -9  PID   fi

User · Answer

This works good for me    PID  ps -eaf   grep syncapp   grep -v grep   awk   print  2    if             PID      then   echo  killing  PID    kill -9  PID fi

User · Answer

Kill -9 PID   should be  kill -9  PID   see the difference

[bash] Shell script to capture Process ID and kill it if exist

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