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Full Discussion: Kron Shell: deleting all but most recent log files
Top Forums Shell Programming and Scripting Kron Shell: deleting all but most recent log files Post 302255377 by WmShaw on Thursday 6th of November 2008 10:14:58 AM
Old 11-06-2008
Kron Shell: deleting all but most recent log files
I am trying to create a Korn Shell script to be run every 5-10 minute from a crontab. This script needs to look for log files (transaction_<date>.log). If there are more than 5 such files, it needs to delete all but the most current 5. How often these files are create varies - can be every minute can be once a day, but it is important to leave the couple most current files. Conceptually I know what to do, but syntactically can't pull it off. Seems like it needs to do a ls -ltr (return the files in date order most recent being last). It needs to know how many were returned,. If it isn't more than 5, don't do anything else. If there are, get the files names of the all the logs except the last 5 returned by ls -ltr and delete them. But How to do all this?
 

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LEARN ABOUT NETBSD

rcsfreeze

RCSFREEZE(1)						      General Commands Manual						      RCSFREEZE(1)

NAME

       rcsfreeze - freeze a configuration of sources checked in under RCS

SYNOPSIS

       rcsfreeze [name]

DESCRIPTION

       rcsfreeze assigns a symbolic revision number to a set of RCS files that form a valid configuration.

       The  idea is to run rcsfreeze each time a new version is checked in.  A unique symbolic name (C_number, where number is increased each time
       rcsfreeze is run) is then assigned to the most recent revision of each RCS file of the main trunk.

       An optional name argument to rcsfreeze gives a symbolic name to the configuration.  The unique identifier is still generated and is  listed
       in the log file but it will not appear as part of the symbolic revision name in the actual RCS files.

       A log message is requested from the user for future reference.

       The  shell  script  works  only on all RCS files at one time.  All changed files must be checked in already.  Run rcsclean(1) first and see
       whether any sources remain in the current directory.

FILES

       RCS/.rcsfreeze.ver
	      version number

       RCS/.rcsfreeze.log
	      log messages, most recent first

AUTHOR

       Stephan v. Bechtolsheim

SEE ALSO

       co(1), rcs(1), rcsclean(1), rlog(1)

BUGS

       rcsfreeze does not check whether any sources are checked out and modified.

       Although both source file names and RCS file names are accepted, they are not paired as usual with RCS commands.

       Error checking is rudimentary.

       rcsfreeze is just an optional example shell script, and should not be taken too seriously.  See CVS for a more complete solution.

									GNU							      RCSFREEZE(1)
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