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Empty a file

Terminal - Empty a file
> foobar.txt
2009-12-29 08:08:15
6
Empty a file

Alternatives

There are 6 alternatives - vote for the best!

Terminal - Alternatives
truncate -s0 file
2009-10-24 16:31:03
User: pipping
17

The downside of output redirection is that you need permissions. So something like

> file

won't play nicely w/ sudo. You'd need to do something like

bash -c '> file'

instead, you could go w/

sudo truncate -s0 file
:> file
> file
truncate -s 0 file.txt
2012-07-30 06:50:30
User: quentin
0

Immediately make a file empty. This even works if the file is still being written to. Great for cleaning up huge log files!

> file.txt
2012-08-24 06:51:13
User: arkanjo
0

Using only this, has the same.

(tested in linux, HP-UX and AIX)

Know a better way?

If you can do better, submit your command here.

What others think

:> <FILE>

is quite more portable ( Unix, Linux... )

Comment by sputnick 287 weeks and 3 days ago

Your point of view

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