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2011-03-12 - Confoo 2011 presentation
Slides are available from the commandlinefu presentation at Confoo 2011: http://presentations.codeinthehole.com/confoo2011/
2011-01-04 - Moderation now required for new commands
To try and put and end to the spamming, new commands require moderation before they will appear on the site.
2010-12-27 - Apologies for not banning the trolls sooner
Have been away from the interwebs over Christmas. Will be more vigilant henceforth.
2010-09-24 - OAuth and pagination problems fixed
Apologies for the delay in getting Twitter's OAuth supported. Annoying pagination gremlin also fixed.

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Simple Comment an entire file

Terminal - Simple Comment an entire file
sed -i 's/^/#/' FILENAME
2009-09-11 14:13:47
User: flip387
Functions: sed
Simple Comment an entire file

With this simple sed command we can easily comment and entire file.


There are 15 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

no need the ending 'g'.

'g' means for all occurences in a line, the line starting can't be present more than once on a line.

correct command is either:

sed -i 's/^/#/1' FILENAME


sed -i 's/^/#/' FILENAME
Comment by mobidyc 293 weeks and 1 day ago

Ahh thanks for the update, I will go ahead adn fix this command.

Comment by flip387 293 weeks and 1 day ago

And here's a solution for systems without GNU sed:

echo "%s/^/#/^Jwq"|ex FILENAME

note that ^J is Ctrl-J, depending on shell settings you need to prefix it with Ctrl-Q or Ctrl-V when entering. I didn't use '

Comment by penpen 293 weeks and 1 day ago

seems as if I once again found a bug in this site :-| The dropped part of the sentence was that I did not use three less than symbols because that also does not work on most systems...

Comment by penpen 293 weeks and 1 day ago

Your point of view

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