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Shell Programming and Scripting
KILL PID, intern should kill another PID.
Post 302093072 by grial on Tuesday 17th of October 2006 07:47:07 AM
10-17-2006
Quote:
Originally Posted by rkrgarlapati
thanks grial,
i think i had not explained in a proper way.
PID TTY TIME CMD
9086 pts/1 0:00 ksh
9241 pts/1 0:02 java
9240 pts/1 0:00 shell_script_bg
i mean to say if i kill the PID 9240 which belong to shell_script_bg, this intern should kill java PID 9241.
i killed the process shell_script_bg using kill -9 9240, shell_script_bg is the shell script code,
now my question is what is the code change i have to make in shell script, so that if i kill it's process ID then that should kill some other process ID (java's)internally.
i think i had not explained in a proper way.
PID TTY TIME CMD
9086 pts/1 0:00 ksh
9241 pts/1 0:02 java
9240 pts/1 0:00 shell_script_bg
i mean to say if i kill the PID 9240 which belong to shell_script_bg, this intern should kill java PID 9241.
i killed the process shell_script_bg using kill -9 9240, shell_script_bg is the shell script code,
now my question is what is the code change i have to make in shell script, so that if i kill it's process ID then that should kill some other process ID (java's)internally.
What I'm telling you is to use
"kill -15 <script_pid>"
instead of
"kill -9 <script_pid>".
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LEARN ABOUT BSD
kill
KILL(1) General Commands Manual KILL(1) NAME
kill - terminate a process with extreme prejudice SYNOPSIS
kill [ -sig ] processid ... kill -l DESCRIPTION
Kill sends the TERM (terminate, 15) signal to the specified processes. If a signal name or number preceded by `-' is given as first argu- ment, that signal is sent instead of terminate (see sigvec(2)). The signal names are listed by `kill -l', and are as given in /usr/include/signal.h, stripped of the common SIG prefix. The terminate signal will kill processes that do not catch the signal; `kill -9 ...' is a sure kill, as the KILL (9) signal cannot be caught. By convention, if process number 0 is specified, all members in the process group (i.e. processes resulting from the current login) are signaled (but beware: this works only if you use sh(1); not if you use csh(1).) Negative process numbers also have special meanings; see kill(2) for details. The killed processes must belong to the current user unless he is the super-user. The process number of an asynchronous process started with `&' is reported by the shell. Process numbers can also be found by using ps(1). Kill is a built-in to csh(1); it allows job specifiers of the form ``%...'' as arguments so process id's are not as often used as kill arguments. See csh(1) for details. SEE ALSO
csh(1), ps(1), kill(2), sigvec(2) BUGS
A replacement for ``kill 0'' for csh(1) users should be provided. 4th Berkeley Distribution April 20, 1986 KILL(1)