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How to empty a file(already created)

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# 1  
Old 07-04-2007
How to empty a file(already created)
What is the command to empty an already existing file.

please provide me.i used Touch cmd to empty the file.but it changing the time only.
# 2  
Old 07-04-2007
Code:
> file

or
Code:
: > file

# 3  
Old 07-04-2007
i need to empty a file which is already existing.
# 4  
Old 07-04-2007
Quote:
Originally Posted by laknar
i need to empty a file which is already existing.
cat </dev/null >file
# 5  
Old 07-04-2007
Quote:
Originally Posted by laknar
i need to empty a file which is already existing.
The command works also for an existing file :
Code:
$ ls -l my_file
-rw-r--r-- 1 Jean-Pierre Aucun 8943 Jul  4 18:55 my_file
$ > my_file
$ ls -l my_file
-rw-r--r-- 1 Jean-Pierre Aucun 0 Jul  4 18:56 my_file
$

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