Annotate tail -f with timestamps

tail -f file | while read; do echo "$(date +%T.%N) $REPLY"; done

22
2012-02-18 17:22:53

2 Alternatives + Submit Alt

What Others Think

Damn, that's useful!
flatcap · 351 weeks and 4 days ago
I thought bash's 'read' tokenized on spaces; today I learned it can be used to read whole lines.
Mozai · 350 weeks and 6 days ago
Read it today and it saved my life! Add "| tee dated_file.log" or "> dated_file.log" if you want to move it around for analysis
seattlegaucho · 350 weeks and 4 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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