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Shell Programming and Scripting

For/While Loop to Increment Filenames in a Script

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Top Forums Shell Programming and Scripting For/While Loop to Increment Filenames in a Script
# 8  
Old 10-31-2012
I forgot a line. My bad.

Code:
#!/bin/bash

inc_log() {
        set -- manager.log*
        while [ "$#" -gt 0 ]
        do
                old=$#
                let new=old+1
                echo cp manager.log$old manager.log$new
                shift
        done

        echo cp manager.log manager.log1
        #echo ":>" manager.log # Truncate manager.log
}

# 9  
Old 10-31-2012
Got it with a little help

Code:
inc_log()
{
for file in ${man_log}*
do
count=$((count + 1))
cp $man_log $man_log$count
done
}

man_log=/home/user/manager.log

	if [ -s "manager.log" ]; then

	inc_log

	echo "finished"
fi 
exit

Code:
./script
./script
./script
./script
./script

ls -ltr
-rw-r--r--  1 root  root    23 Oct 31 15:04 manager.log1
-rw-r--r--  1 root  root    23 Oct 31 15:04 manager.log2
-rw-r--r--  1 root  root    23 Oct 31 15:04 manager.log3
-rw-r--r--  1 root  root    23 Oct 31 15:05 manager.log4
-rw-r--r--  1 root  root    23 Oct 31 15:05 manager.log5

I needed to add the wildcard in the "for" statement, otherwise only the current manager.log is taken in account. Thanks for all the help.
Last edited by metallica1973; 10-31-2012 at 06:41 PM..
# 10  
Old 10-31-2012
Just be careful before you run it a second time Smilie

(vis-à-vis Corona688's suggestion)
# 11  
Old 10-31-2012
Quote:
Originally Posted by metallica1973
I need to add the wildcard in the "for" statement, otherwise only the current manager.log is taken in account. Thanks for all the help.
There's no point using a global variable when you're using a function, just pass it into the function. Try my code again with the fix please.
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