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Annotate tail -f with timestamps

Terminal - Annotate tail -f with timestamps
tail -f file | while read; do echo "$(date +%T.%N) $REPLY"; done
2012-02-18 17:22:53
User: yoyoyojomo
Functions: echo file tail
19
Annotate tail -f with timestamps

Alternatives

There are 4 alternatives - vote for the best!

Terminal - Alternatives
tail -f file | ts '%H:%M:%.S'
2012-03-02 11:15:29
User: Vagrant
Functions: file tail
1

Uses the command ts in order to add a timestamp on each line. This command is provided in the moreutils package on Debian, and you may need libtime-duration-perl to be able to format the date.

ldapsearch -xLLL -b "cn=schema" "(objectclass=*)" \ \* objectclasses attributetypes | perl -p0e 's/\n //g'
2012-04-04 13:31:31
User: ioggstream
Functions: perl
-2

Dump 389ds schema, putting "\n " on one line with perl.

You have to specify the objectclasses, attributetypes operational attributes too, otherwise they won't be dumped!

Know a better way?

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What others think

Damn, that's useful!

Comment by flatcap 183 weeks and 5 days ago

I thought bash's 'read' tokenized on spaces; today I learned it can be used to read whole lines.

Comment by Mozai 183 weeks and 1 day 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

Comment by seattlegaucho 182 weeks and 5 days ago

Your point of view

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