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May 19, 2015 - A Look At The New Commandlinefu
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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 2 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 335 weeks and 1 day ago

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

Comment by flip387 335 weeks 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 335 weeks 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 335 weeks ago

Your point of view

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