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Delete all log files older than 10 day and whose first string of the first line is "MSH" or "<?xml"

 
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Old 02-17-2017
Delete all log files older than 10 day and whose first string of the first line is "MSH" or "<?xml"
Dear Ladies & Gents,

I have a requirement to delete all the log files in /var/log/test directory that are older than 10 days and their first line begin with "MSH" or "<?xml" or "FHS". I've put together the following BASH script, but it's erroring out:

Code:
for filename in $(find /var/log/test -type f -mtime +10)
do
        read -r firstLine < $filename
        echo "$firstLine"
either        echo "${firstLine:0:3}"     # "${firstLine:0:3}": bad substitution
or             echo "${cut -c1-8}"         # "${cut -c1-8}": bad substitution

        if [ "${firstLine:0:3}" = "MSH" ] || [ "${firstLine:0:3}" = "FHS" ] || [ "${firstLine:0:5}" = "<?xml" ]
        then
                echo $filename >> /var/log/test/my2.log     # Just a log file to keep track of which files got deleted
##              rm $filename
        fi
done

*****************************************************************

Please assist.
Many thanks in advance, you guys/gals are awesome!



Moderator's Comments:
Mod Comment Please use CODE tags as required by forum rules!
Last edited by RudiC; 02-17-2017 at 01:30 PM.. Reason: Added CODE tags.
 
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