Wednesday, April 13, 2011

capture debug log of my bash script


export PS4='$0.$LINENO+ '
exec > /tmp/TTpull.log
exec 2>&1
set -x

This is how I like to capture - now what those above means?

The PS4 i already explained in my previous post. The $0 variable holds the name of the script. $LINENO displays the current line no. within the script. The exec command redirects I/O streams. to a file /tmp/TTpull.log. 2>&1 redirects stderr and stdout. and finally - 'set -x' enables debugging.


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