Posts Tagged ‘timestamp’

15
Nov

Prefix command output in a shell with timestamp

   Posted by: Kristian Rønningen    in linux

So I was writing this script that logged certain things to a file using a regular redirect. My script was running various commands that outputted a random amount of lines, all in random formats. I wanted to have a timestamp prefixing all of that, similar to what you get in logs written by syslog. I searched around a bit, and ended with this:

1
ls -l / | awk '{now=strftime("%Y-%m-%d %T %Z"); print now" "$0}'

Of course if you want a different timestamp, you just change the arguments you pass to strftime. Quite handy!

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