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Full Discussion: pid.cleanup script.
Top Forums Shell Programming and Scripting pid.cleanup script. Post 302500305 by methyl on Monday 28th of February 2011 07:31:19 AM
Old 02-28-2011
Referring to post #1 (we'll ignore post #2).
The script contains a fundamental logic error. If there is more than one file matching the pattern *.pid the variable $PID contains multiple values. From that point on the script fails.

I'm not quite clear what you are trying to do here. Reading betweeen the lines, beware that deleting a ".pid" file will not stop the process with that Process ID.

The script needs restructuring to process each file in turn.

e.g.

Code:
#!/bin/bash
#
# Script to delete specific file older than N minutes.
# OLDERTHAN="40" #40 minutes

FOLDER="home/optima/pids/"
ls -1d "${FOLDER}"/*.pid 2>/dev/null | while read PID
do
OLDERTHAN="40"
if [ -e ${FOLDER}/${PID} ]
then
     ls_time=`ls -l ${FOLDER}/$PID`
     pid_h=`echo $ls_time | cut -d' ' -f8 | cut -d\: -f1`
     pid_m=`echo $ls_time | cut -d' ' -f8 | cut -d\: -f2`
     echo pid time=$pid_h:$pid_m
     let pid_time=(10#$pid_h*60)+10#$pid_m
     curr_h=`date | cut -d' ' -f4 | cut -d\: -f1`
     curr_m=`date | cut -d' ' -f4 | cut -d\: -f2`
     let curr_time=(10#$curr_h*60)+10#$curr_m
     echo curr_time=`date | cut -d' ' -f4`
     let diff=10#$curr_time-10#$pid_time
     #echo pid_time=$pid_time
     #echo curr_time=$curr_time
     echo diff=$diff minutes
     if [ $diff -ge $OLDERTHAN ]
     then
          echo "${PID} is older than $OLDERTHAN minutes"
          echo "Deleting ${PID}..."
          # Remove echo when thoroughly tested
          echo rm -f ${FOLDER}/${PID}
     else
          echo -e "${PID} is not older than $OLDERTHAN minutes"
     fi
else
     echo -e "${PID} not found."
fi
done

Keep the "rm" line as an "echo" until you are happy that your script does what you want.
Noted zaxxon comments and corrected "cut" statements.
Noted that the "date" line could be better but didn't change it.
Last edited by methyl; 02-28-2011 at 08:40 AM.. Reason: layout correct cut syntax
This User Gave Thanks to methyl For This Post:
sajid.shah
 

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LEARN ABOUT HPUX

uuclean

uuclean(1M)															       uuclean(1M)

NAME

       uuclean - uucp spool directory clean-up

SYNOPSIS

       [options]

DESCRIPTION

       The commands, including are targeted for removal from HP-UX; see the below.

       scans the spool directories for files with the specified prefix and deletes all those that are older than the specified number of hours.

   Options
       recognizes the following options:

	      Clean	     directory	instead  of  the  spool  directory.  If directory is not a valid spool directory, it cannot contain ``work
			     files''; i.e., files whose names start with These files have special meaning to pertaining to job statistics.

	      Scan for files with
			     pre as the file prefix.  Up to 10 arguments can be specified.  A without any pre following will cause all files older
			     than the specified time to be deleted.

	      Files whose age is more than
			     time hours are deleted if the prefix test is satisfied (default time is 72 hours).

	      The default action for
			     is  to  remove  files that are older than a specified time (see option).  The option is used to find files older than
			     time hours; however, the files are not deleted.  If the argument file is present the warning is placed in file;  oth-
			     erwise, the warnings go to the standard output.

	      Only files destined for system
			     sys are examined.	Up to 10 arguments can be specified.

	      The	     option sends mail to the owner of the file when it is deleted.  If a file is specified, an entry is placed in file.

       This program is typically started by (see cron(1M)).

WARNINGS

       Use of commands, including is discouraged because they are targeted for removal from HP-UX.  Use ftp(1) or rcp(1) instead.

FILES

       spool directory

SEE ALSO

       uucp(1), uux(1), cron(1M), uucleanup(1M).

       Tim O'Reilly and Grace Todino,
	      O'Reilly & Associates, Inc. USA.

       Grace Todino and Dale Dougherty,
	      O'Reilly & Associates, Inc. USA.

								  TO BE OBSOLETED						       uuclean(1M)
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