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For the &quot;for comand&quot; the separator is blank you can try to use the read comand like this exec 3</pathname/filename while read -u3 lines do echo $lines grep &quot;$lines&quot; bla bla bla ( don't forget double quotes ) done

i'm not really shure ( ==> it must be checked ) parameters in the crontab : &quot;minute hour&quot; &quot;number of the day&quot; &quot;number of the month&quot; &quot;number of the week&quot; &quot;script name&quot; to start at friday 13 08:00 my script 00 08 13 * 5 my script

new_var=`echo $var | sed -e &quot;s/\¨/ /g` sed command : -e as editing s as subttitude \¨ : the slash indicate that don't interpretate ¨ / / : second patern g as global if the patern appears more than one time make shure than you using good executing kote ( alt gr ` spacebar )

Beware the find command is recursive all sub-directories will be deal with the command here the &quot;exec rm -f {} &quot; command is very dangerous

Find &quot;pathname&quot; -name &quot;filename&quot; -mtime &quot;n&quot; /-atime &quot;n&quot; n = modified/accessed n days