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Full Discussion: File maintenance programs/scripts ala logrotate
Top Forums Shell Programming and Scripting File maintenance programs/scripts ala logrotate Post 302508379 by cgkmal on Monday 28th of March 2011 03:12:46 AM
Old 03-28-2011
Hi newbie_01,

I don't know about such custom applications, so, a custom script could be adapted to do the job.

As you can see below, for this tasks "find" command would be your friend, and combining it with desired
criterias and some other commands, you'll satisfy your requirements.

You've asked for:

1-) removing files that are x-number of days old,
Code:
# 1-) Looking for txt files older than 365 days and printing them within folder and subfolder
 find . -name "*.txt" -mtime +365

# 2-) Printing txt files modified less than 365 days ago within folder and subfolders
 find . -name "*.txt" -mtime -365

# 3-) Printing txt files modified 365 days ago within folder and subfolders
 find . -name "*.txt" -mtime 365

# 4-) Removing txt files older than 365 days within folder and subfolders
*(if you want to remove files is advisable to be sure about files listed/found by "find...")
 find . -name "*.txt" -mtime +365 -exec /bin/rm -f '{}' +

About -mtime: (-mtime n)
(+) means greater than, (-) means less than, and without any symbol means exactly equal to.

2-) Zipping files "if they are core dumped files"
*(Below examples how to zip files, but which is the characteristic of a core dumped file?)
Code:
#1-) Looking all txt files within folders and its subfolders and compress them in a unique zipped file (Compressed_Files.zip)
 find . -name "*.txt" -print | zip Compressed_Files -@

# 2--)Compressing each txt file within folder and subfolders file, adds to original name ".gz" (filename.txt to filename.txt.gz) 
# and deletes original file
 find . -name "*.txt" -exec gzip -f '{}' +

# 3-)Unzipping each txt files within folder and its subfolders, deleting original gz file.
 find . -name "*.txt.gz" -exec gunzip -f '{}' +

3-) Removing files if they are zero-sized files:
Code:
 # 1-) Removing zero size files within folder and its subfolders.
1-) find . -type f -size 0 -exec /bin/rm -f '{}' +
or
2-) find . -type f -empty -exec /bin/rm -f '{}' +

Hope it helps,

Regards.
 

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LEARN ABOUT REDHAT

pidof

PIDOF(8)						Linux System Administrator's Manual						  PIDOF(8)

NAME

       pidof -- find the process ID of a running program.

SYNOPSIS

       pidof [-s] [-x] [-o omitpid] [-o omitpid..]  program [program..]

DESCRIPTION

       Pidof  finds  the  process  id's (pids) of the named programs. It prints those id's on the standard output. This program is on some systems
       used in run-level change scripts, especially when the system has a System-V like rc structure. In that case these scripts  are  located	in
       /etc/rc?.d, where ? is the runlevel. If the system has a start-stop-daemon (8) program that should be used instead.

OPTIONS

       -s     Single shot - this instructs the program to only return one pid.

       -x     Scripts too - this causes the program to also return process id's of shells running the named scripts.

       -o     Tells  pidof  to omit processes with that process id. The special pid %PPID can be used to name the parent process of the pidof pro-
	      gram, in other words the calling shell or shell script.

NOTES

       pidof is simply a (symbolic) link to the killall5 program, which should also be located in /sbin.

       When pidof is invoked with a full pathname to the program it should find the pid of, it is reasonably safe. Otherwise it is  possible  that
       it returns pids of running programs that happen to have the same name as the program you're after but are actually other programs.

SEE ALSO

       shutdown(8), init(8), halt(8), reboot(8)

AUTHOR

       Miquel van Smoorenburg, miquels@cistron.nl

								    01 Sep 1998 							  PIDOF(8)
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