roberto: > > a runnig program logs its output to a file and i'd like to read this > log file "while" it is being written and updated by the program, and > > possibly searching in it for patterns and so on
When you want to search for specific patterns, you can either
$ tail -f /var/log/syslog | grep foobar
That way you only see lines containing your pattern.
Or you use "less /var/log/syslog", then search ('/') for your pattern
and then press 'F' ("Follow changes") which gives you a tail-like
display of the file. The difference is that less will highlight matches
but still display all the rest.
BTW, less has some really handy functions, like '-S' to toggle line
wrapping and '-N' to toggle the display of line numbers. Just press 'h'
to get an overview. And it can display colors, which grep can do, too.
J.
--
I count my partner's eyelashes.
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