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Top Forums Shell Programming and Scripting If the value > 100 delete the line with awk or sed Post 302903703 by MadeInGermany on Thursday 29th of May 2014 05:31:26 AM
Old 05-29-2014
I usually do the backup first
Code:
cp -p file file.old && awk '$3<=100' file.old > file && rm file.old

If I want to keep the backup I simply omit (or hash-out) the rm part.
 

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BACKUP_QUIT(8)						       AFS Command Reference						    BACKUP_QUIT(8)

NAME
       backup_quit - Leaves interactive mode

SYNOPSIS
       quit [-help]

       q [-h]

DESCRIPTION
       The backup quit command exits interactive mode, returning the issuer to the regular shell prompt at which the backup or backup interactive
       command was issued to enter interactive mode. The command has no effect when issued outside interactive mode. Issuing the Ctrl-D command
       also exits interactive mode.

CAUTIONS
       To exit interactive mode, all jobs must be completed. Use the backup jobs command to list any jobs currently pending or executing, and the
       backup kill command to terminate them as necessary.

OPTIONS
       -help
	   Prints the online help for this command. All other valid options are ignored.

EXAMPLES
       The following command exits interactive mode:

	  backup> quit
	  %

PRIVILEGE REQUIRED
       None

SEE ALSO
       backup(8), backup_interactive(8), backup_jobs(8), backup_kill(8)

COPYRIGHT
       IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.

       This documentation is covered by the IBM Public License Version 1.0.  It was converted from HTML to POD by software written by Chas
       Williams and Russ Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.

OpenAFS 							    2012-03-26							    BACKUP_QUIT(8)
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