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mv files to /dev/null

 
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# 8  
Old 11-02-2001
When I do the same I get the following :

<pre>

(root)146: cat /etc/services > /tmp/test
(root)147: > /tmp/test
Invalid null command

</pre>
# 9  
Old 11-02-2001
What shell / Unix are you using?

I can verify that it works with the following shells:

<b>Linux:</b>
bash
pdksh
<b>HP-UX:</b>
ksh93
sh
sh (/usr/old/bin/sh - {antiquated sh})
# 10  
Old 11-02-2001
I am using solaris 7/SunOS 5.7

it does not work with either sh , ksh or csh
# 11  
Old 11-02-2001
Bug Thx PxT
Didn't realize <b> > $file</b> was possible. Thx
# 12  
Old 11-02-2001
Quote:
Originally posted by guest100
I am using solaris 7/SunOS 5.7

it does not work with either sh , ksh or csh
I have solaris 6/SunOs 5.6. It works for me with sh and ksh. It fails with csh as it will with any csh anywhere.

If Sun really made a change like that to sh and ksh they are in violation of posix standards.

"> file" should work in any bourne or korn shell and it must work in any posix compliant shell.
# 13  
Old 11-02-2001
This is cool. So I can use it in place of 'touch' as well...saves me keystrokes.

Runs fine in AIX4.3. Good finding.
# 14  
Old 11-02-2001
giannicello,

You cannot use this in place of "touch".
"> somefile"
..will truncate the file. "touch" simply updates the
file's access and modification times. The contents of the
file remains.

Moral of the story.... use this with caution. Smilie
 
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