I wish to make a correction to my previous post: ksh: $ cat .kshrc > somefile ksh: somefile: file already exists $ cat .kshrc >! somefile $ (but what happens is the shell creates a file named ! with the contents of .kshrc...it does not touch somefile) $ cat .kshrc >| somefile $ (the shell overwrites somefile's contents with my .kshrc's contents) bash: $ cat .bashrc > somefile bash: somefile: cannot overwrite existing file $ cat .bashrc >! somefile $ (but what happens is the shell creates a file named ! with the contents of .kshrc...it does not touch somefile) $ cat .bashrc >| somefile $ (the shell overwrites somefile's contents with my .bashrc's contents) zsh: % cat .zshrc > somefile zsh: file exists: somefile % cat .zshrc >! somefile % (the shell overwrites somefile's contents with my .zshrc's contents) % cat .zshrc >| somefile % (the shell overwrites somefile's contents with my .zshrc's contents) Either the ! or | in front of the caret will override the "noclobber" setting in the zsh. -----Original Message----- From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx]On Behalf Of Schott, Erik J Mr ANOSC/FCBS Sent: Thursday, December 16, 2004 2:28 PM To: General Red Hat Linux discussion list Subject: RE: nullifying file content.. 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@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx]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@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx] 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@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx]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@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx] 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@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx]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@xxxxxxxxxx > [mailto:redhat-list-bounces@xxxxxxxxxx]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@xxxxxxxxxx > [mailto:redhat-list-bounces@xxxxxxxxxx]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@xxxxxxxxxx > > [mailto:redhat-list-bounces@xxxxxxxxxx]On Behalf Of Mulley, Nikhil > > Sent: Thu, December 16, 2004 12:16 PM > > To: redhat-list@xxxxxxxxxx > > 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@xxxxxxxxxx?subject=subscribe > > https://www.redhat.com/mailman/listinfo/redhat-list > > > ************************************************************** > ********************* > Information contained in this email message is intended only > for use of the individual or entity named above. 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