nullifying file content..

Thu Dec 16 21:28:07 UTC 2004

Not for csh or tcsh.

% cat .cshrc > somefile
somefile: File exists

% cat .cshrc >| somefile
Missing name for redirect

%cat .cshrc >! somefile
%

-----Original Message-----
From: redhat-list-bounces at redhat.com
[mailto:redhat-list-bounces at redhat.com]On Behalf Of IT Dept
Sent: Thursday, December 16, 2004 2:08 PM
To: 'General Red Hat Linux discussion list'
Subject: RE: nullifying file content..

To bypass the 'noclobber' setting shouldn't it be:

cat /dev/null >| <filename>

Not sure which is right. Don't have that option (noclobber) set so I
don't usually need the command.

Paul Pettit
CCB Inc.

P.s. sorry about that 'rm' recommendation, needed more coffee at the
time.

-----Original Message-----
From: redhat-list-bounces at redhat.com
[mailto:redhat-list-bounces at redhat.com] On Behalf Of Schott, Erik J Mr
ANOSC/FCBS
Sent: Thursday, December 16, 2004 11:31 AM
To: General Red Hat Linux discussion list
Subject: RE: nullifying file content..

It sounds like you have "noclobber" set.  If you want to temporarily
override it to clear out the file, do this:

cat /dev/null >! <your_file>

-----Original Message-----
From: redhat-list-bounces at redhat.com
[mailto:redhat-list-bounces at redhat.com]On Behalf Of Rigler, Stephen C.
Sent: Thursday, December 16, 2004 9:44 AM
To: General Red Hat Linux discussion list
Subject: RE: nullifying file content..

cp /dev/null filename

-Steve 

-----Original Message-----
From: redhat-list-bounces at redhat.com
[mailto:redhat-list-bounces at redhat.com]
On Behalf Of Mulley, Nikhil
Sent: Thursday, December 16, 2004 10:23 AM
To: General Red Hat Linux discussion list
Subject: RE: nullifying file content..

The thing is it is not working under tcsh , while I invoked bash , and
did
the same thing which you have shown , it worked ,
But I did not understand why it did not work under  tcsh  ...
Can any please throw light on this ....

Thanks,
Nikhil

-----Original Message-----
From: redhat-list-bounces at redhat.com
[mailto:redhat-list-bounces at redhat.com]On Behalf Of Karasik, Vitaly
Sent: Thursday, December 16, 2004 5:10 PM
To: General Red Hat Linux discussion list
Subject: RE: nullifying file content..

well, there is noclobber option which prevent overwriting:
http://unixhelp.ed.ac.uk/environment/env7.html

> -----Original Message-----
> From: redhat-list-bounces at redhat.com
> [mailto:redhat-list-bounces at redhat.com]On Behalf Of Mulley, Nikhil
> Sent: Thu, December 16, 2004 1:30 PM
> To: General Red Hat Linux discussion list
> Subject: RE: nullifying file content..
> 
> 
> I tried it , but was no use 
> $>mylog.log
> mycron.log: File exists
> $
>  :(
> Thanks,
> Nikhil
> 
> -----Original Message-----
> From: redhat-list-bounces at redhat.com
> [mailto:redhat-list-bounces at redhat.com]On Behalf Of Karasik, Vitaly
> Sent: Thursday, December 16, 2004 3:50 PM
> To: General Red Hat Linux discussion list
> Subject: RE: nullifying file content..
> 
> 
> > filename
> 
> > -----Original Message-----
> > From: redhat-list-bounces at redhat.com
> > [mailto:redhat-list-bounces at redhat.com]On Behalf Of Mulley, Nikhil
> > Sent: Thu, December 16, 2004 12:16 PM
> > To: redhat-list at redhat.com
> > Subject: nullifying file content..
> > 
> > 
> >     Hi , I have some 400MB file in my home dir , How do I 
> > remove /clear the file content immediately with in a single 
> > command or should I cat it to /dev/null .
> > Can any body please tell me HOWTO...
> >  °v°
> > /(_)\
> >   ^ ^
> >  
> > -- 
> > redhat-list mailing list
> > unsubscribe mailto:redhat-list-request at redhat.com?subject=subscribe
> > https://www.redhat.com/mailman/listinfo/redhat-list
> > 
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