Scripting 101: Purging Files

Ei-lo! 'Zup? I'm beginning to enjoy this I guess: scripting. Unexpected, I got a ping from a former colleague, asking from a noobs [read: me] regarding scripting. Without blinking, I accepted the challenge. I was asked to check on the script she made for purging files. After checking on the requirements, given, and asking for advise from a scripting guru [Morsgang Freeman], below are the revised forms. Btw, the first one I made really sucks [I hope these won't :(]. As of writing, these are not tested, not 'til tomorrow when she receives the email/script.

1. First is to create a file, say SUBDIR.txt with the ff. contents:

MERGE/REJECTS/ARCHIVE
MERGE/REJECTS/ARCHIVERAW
MERGE/FILTERED/ARCHIVE
MERGE/FILTERED/ARCHIVERAW
INSERT/REJECTS/INSERTED
INSERT/FILTERED/INSERTED
FTP/FTP_ARCHIVE

2. I made two variations of the script:
a. Version 1

#!/bin/bash

export LOGDIR=/ramsys_data/bmcps/ramsys/
export DIRLIST="ALTL AMA5 CAMA FREE NRTL SEGR UTSS"

for XXX in DIRLIST
do
cd $LOGDIR
if [ "$PWD" = "$LOGDIR" ]
then
for PURDIR in `cat SUBDIR.txt`
do
# A log file can be added here [good practice] to list the files to be deleted...
find $XXX/$PURDIR -type f -name "*" -mtime +5 -exec rm {} \;
done
else
echo "Check $USER\'s permissions; cannot change to $CURDIR."
# You can add a mailer here for notification...
exit 1
fi
done


b. Version 2

#!/bin/bash

LOGDIR=/ramsys_data/bmcps/ramsys/
DIRLIST="ALTL AMA5 CAMA FREE NRTL SEGR UTSS"

cd $LOGDIR || {
echo "Check the permissions; can't change to $CURDIR."
# You can add a mailer here for notification...
exit 1
}

for XXX in DIRLIST
do
for PURDIR in `cat SUBDIR.txt`
do
# A log file can be added here [good practice] to list the files to be deleted...
find $XXX/$PURDIR -type f -name "*" -mtime +5 -exec rm {} \;
done
done


If this will be run in cron, e.g. everyday at 0100H, we can make it as:

0 1 * * * ( scriptname_here.sh > /if_wanted/can/store/to/logfile 2>&1 ) &

Or throw it to /dev/null. Whatever suits you.