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Full Discussion: PID missing on my File.
Top Forums Shell Programming and Scripting PID missing on my File. Post 303000710 by mohtashims on Tuesday 18th of July 2017 12:42:16 PM
Old 07-18-2017
Tools
Quote:
Originally Posted by MadeInGermany
It's a feature of some shells to display the job nr and the PID of a started background process.
But the display goes to the terminal, not into the nohup.out.
The nohup.out only gets the output of the ./startserver.sh command.
The PID of the (last) background command can be written to a logfile, for example
Code:
echo $! >>logfile

This is a show stopper and only if I could get a feasible solution.

1. if the PID goes to startserver.sh instead of nohup.out ... that's is fine but why no logging in the nohup.out ?? We need logging to the nohup.out irrespective of whether it is the startserver.sh or the nohup.out that gets the PID.

2. We need to get the pid of the process inorder to kill it automatically thus we cannot enforce everyone starting our servers to echo $! >>logfile

They may start as they like. Hence fuser of the file name was a feasible option to get the pid and kill it using automation.
 

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LEARN ABOUT CENTOS

trace-cmd-list

TRACE-CMD-LIST(1)														 TRACE-CMD-LIST(1)

NAME

       trace-cmd-list - list available plugins, events or options for Ftrace.

SYNOPSIS

       trace-cmd list [OPTIONS]

DESCRIPTION

       The trace-cmd(1) list displays the available plugins, events or Ftrace options that are configured on the current machine. If no option is
       given, then it lists all plugins, events and Ftrace options to standard output.

OPTIONS

       -e
	   This option will list the available events that are enabled on the local system.

       -t
	   This option will list the available tracers that are enabled on the local system.

       -p
	   Same as -t and only for legacy purposes.

       -o
	   This option will list the available Ftrace options that are configured on the local system.

       -f [regex]
	   This option will list the available filter functions. These are the list of functions on the system that you can trace, or filter on.
	   It takes an optional argument that uses regcomp(3) expressions to seach.

	       trace-cmd list -f '^sched.*'

       -P
	   List the plugin files that get loaded on trace-cmd report.

       -O
	   List plugin options that can be used by trace-cmd report -O option.

SEE ALSO

       trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1),
       trace-cmd-split(1), trace-cmd-listen(1)

AUTHOR

       Written by Steven Rostedt, <rostedt@goodmis.org[1]>

RESOURCES

       git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git

COPYING

       Copyright (C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL).

NOTES

	1. rostedt@goodmis.org
	   mailto:rostedt@goodmis.org

								    06/11/2014							 TRACE-CMD-LIST(1)
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