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Shell Programming and Scripting
Help scripting to start, check, and restart processes
Post 302533422 by MacG32 on Thursday 23rd of June 2011 04:38:36 PM
06-23-2011
Finally got it with your help neutronscott. Thank you for all of your help. 
I removed the " & echo $! > cb.pid" from the bottom of the chkscr script and added "ps -aef | grep -v grep | grep '/bin/bash /home/*user*/*serverdir*/exec' | awk '{print $2}' > cb.pid" to the next line.
Now it runs perfectly.
---------- Post updated at 04:38 PM ---------- Previous update was at 03:25 PM ----------
It's not working correctly. Spoke too soon, because my test didn't run long enough. It keeps making chkscr and exec processes. The check in the chkscr script is invalid.
I'm now looking for a check that checks the value in the file cb.pid to the actual PID of the process.
I can get the actual value of the processes PID by using "CBPID=$(ps -aef | grep -v grep | grep '/bin/bash /home/*user*/*serverdir*/exec' | awk '{print $2}')".
I can't find how to extract the PID number stored in the cb.pid file and make a valid "if actual PID = file's PID then end" statement.
Any help would be greatly appreciated.
I removed the " & echo $! > cb.pid" from the bottom of the chkscr script and added "ps -aef | grep -v grep | grep '/bin/bash /home/*user*/*serverdir*/exec' | awk '{print $2}' > cb.pid" to the next line.
Now it runs perfectly.
---------- Post updated at 04:38 PM ---------- Previous update was at 03:25 PM ----------
It's not working correctly. Spoke too soon, because my test didn't run long enough. It keeps making chkscr and exec processes. The check in the chkscr script is invalid.
I'm now looking for a check that checks the value in the file cb.pid to the actual PID of the process.
I can get the actual value of the processes PID by using "CBPID=$(ps -aef | grep -v grep | grep '/bin/bash /home/*user*/*serverdir*/exec' | awk '{print $2}')".
I can't find how to extract the PID number stored in the cb.pid file and make a valid "if actual PID = file's PID then end" statement.
Any help would be greatly appreciated.
Last edited by MacG32; 06-23-2011 at 05:56 PM..
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LEARN ABOUT DEBIAN
pid
pid(3tcl) Tcl Built-In Commands pid(3tcl) __________________________________________________________________________________________________________________________________________________ NAME
pid - Retrieve process identifiers SYNOPSIS
pid ?fileId? _________________________________________________________________ DESCRIPTION
If the fileId argument is given then it should normally refer to a process pipeline created with the open command. In this case the pid command will return a list whose elements are the process identifiers of all the processes in the pipeline, in order. The list will be empty if fileId refers to an open file that is not a process pipeline. If no fileId argument is given then pid returns the process identi- fier of the current process. All process identifiers are returned as decimal strings. EXAMPLE
Print process information about the processes in a pipeline using the SysV ps program before reading the output of that pipeline: set pipeline [open "| zcat somefile.gz | grep foobar | sort -u"] # Print process information exec ps -fp [pid $pipeline] >@stdout # Print a separator and then the output of the pipeline puts [string repeat - 70] puts [read $pipeline] close $pipeline SEE ALSO
exec(3tcl), open(3tcl) KEYWORDS
file, pipeline, process identifier Tcl 7.0 pid(3tcl)