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Full Discussion: Help needed with delete script.
Top Forums Shell Programming and Scripting Help needed with delete script. Post 302768281 by MadeInGermany on Friday 8th of February 2013 08:41:23 AM
Old 02-08-2013
We are running the following cleantmp.sh in production environment:

Code:
#!/bin/sh

PATH=/usr/bin:/bin:/usr/sbin
export PATH

max_days=30
case $1 in
[0-9]*)
 max_days=$1
 shift
 ;;
esac

dirs_to_clean=${@:-/tmp}

owner_to_keep="root nobody"

omit=""
for i in $owner_to_keep
do
 omit="$omit ( ! -user $i )"
done

for dir in $dirs_to_clean
do
 [ -d $dir ] &&
 cd $dir &&
 find . -depth \! -type d \( -mtime +$max_days -o -mtime -0 \) \( -atime +$max_days -ctime +5 -o -ctime +$max_days -atime +5 -o -type l \) $omit -exec rm -f {} \; -o -type d -empty $omit -mtime +$max_days -exec rmdir {} \; 2>/dev/null
 sleep 1
done

exit 0
# We assume that a full backup (where atime or ctime changes) happens less often than every 5 days.
# We cd first, so there is a good chance that a too long directory path can be accessed
# if -empty is unsupported, replace it by -links 2
# A just emptied directory is deleted immediately or after another max_days
# -mtime -0 detects files with a future time stamp (were extracted from an obscure archive)

A nightly root crontab entry (crontab -e; crontab -l) could be
Code:
59 23 * * * /path/to/cleantmp.sh 10 /path/to/clean

You can add more /2ndpath/to/clean /3rdpath/to/clean ...
Nightly means, the remaining files are never older than 10+2=12 days.
For safety, frequently read files are not deleted.
Last edited by MadeInGermany; 02-08-2013 at 11:21 AM..
 

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LEARN ABOUT CENTOS

cyr_expire

CYR_EXPIRE(8)						      System Manager's Manual						     CYR_EXPIRE(8)

 *

NAME

       cyr_expire - expire messages and duplicate delivery database entries

SYNOPSIS

       cyr_expire [ -C config-file ] [ -D delete-days ] -E expire-duration [ -X expunge-days ] [ -p  mailbox-prefix ] [ -v ]

DESCRIPTION

       Cyr_expire  is  used  to expire messages and duplicate delivery database entries.  Cyr_expire also cleanses mailboxes of partially expunged
       messages (when using the "delayed" expunge mode).  The expiration of messages is controlled by the  /vendor/cmu/cyrus-imapd/expire  mailbox
       annotation  which  specifies  the  age  (in days) of messages in the given mailbox that should be deleted.  Any duplicate delivery database
       entries which correspond to the mailbox are also deleted at the same frequency.

       The value of the /vendor/cmu/cyrus-imapd/expire annotation is inherited by all children of the given mailbox, so an entire mailbox tree can
       be  expired by seting a single annotation on the root of that tree.  If a mailbox does not have a /vendor/cmu/cyrus-imapd/expire annotation
       set on it (or does not inherit one), then no messages are expired from the mailbox.

       Cyr_expire reads its configuration options out of the imapd.conf(5) file unless specified otherwise by -C.

OPTIONS

       -C config-file
	      Read configuration options from config-file.

       -D delete-duration
	      Remove previously deleted mailboxes older than delete-duration (when using the "delayed" delete mode).  The value can be a  floating
	      point  number,  and may have a suffix to specify the unit of time.  If no suffix, the value is number of days.  Valid suffixes are d
	      (days), h (hours), m (minutes) and s (seconds).

       -E expire-duration
	      Prune the duplicate database of entries older than expire-duration.  This value is only used for entries which do not have a  corre-
	      sponding /vendor/cmu/cyrus-imapd/expire mailbox annotation.  Format is the same as delete-duration.

       -X expunge-duration
	      Expunge  previously  deleted  messages  older  than expunge-duration (when using the "delayed" expunge mode).  Format is the same as
	      delete-duration.

	-x    Do not expunge messages even if using delayed expunge mode (reduces the IO hit considerably, allowing you  to  run  cyr_expire  fre-
	      quently to clean up the duplicate database without overloading your server)

       -p mailbox-prefix
	      Only find mailboxes starting with this prefix.  e.g.  "user.justgotspammedlots"

       -v     Enable verbose output.

       -a     Skip  the annotation lookup, so all /vendor/cmu/cyrus-imapd/expire annotations are ignored entirely.  It behaves as if they were not
	      set, so only expire-days is considered for all mailboxes.

FILES

       /etc/imapd.conf

SEE ALSO

       imapd.conf(5), cyrus-master(8)

CMU
								   Project Cyrus						     CYR_EXPIRE(8)
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