Shell Programming and Scripting

Hi All,

Below script will make a copy of the existing log file with the then timestamp details.

I am looking to create a copy of the existing log file for every 60 minutes and when the file limit reaches to 5, the 6th copy should overwrite the first backedup file which means all the time it should maintain the 5 copies of the original log file.

Can you please help me with the rest of the script requirement. Let me know if my requirement is not clear.

------------------------

Code:

do
log=`echo ${logfilespec}
loglist=`ls ${log}`
for log in `echo ${loglist}`
do
echo "Copying ${log}"
cp -p ${log} ${log}"_"`date +%b_%e_%Y_%T`
done
done

Note: I understand the file can be copied by scheduling using CRONTAB but this is not helpful in this scenario.

Thanks
Upendra.

You have a lot of useless use of backticks in there. You don't need echo in backticks to assign one variable to another!

Code:

LOGFILE="logfilename"

while true
do
        sleep $((60*60))

        for X in 6 5 4 3 2
        do
                let Y=X-1
                [ -f "$LOGFILE.$X" ] && mv "$LOGFILE.$Y" "$LOGFILE.$X"
        done

        [ -f "$LOGFILE" ] && cat "$LOGFILE" > "$LOGFILE.1" && :> "$LOGFILE"
done

Thanks for your reply. Unfortunately, this logic is not working for me. Can you suggest/advise of the logic I mentioned above to the program I have written below.

Code:

do
 
log=`echo ${logfilespec}
 
loglist=`ls ${log}`for log in `echo ${loglist}`
 
do
cp -p ${log} ${log}"_"`date +%b_%e_%Y_%T`
 
done
done

In what way is it 'not working'?

Your program makes next to no sense at all, I cannot correct it.