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Top Forums Shell Programming and Scripting Replacing data of output file with input Post 302281339 by rwuerth on Wednesday 28th of January 2009 04:52:42 PM
Old 01-28-2009
Quote:
Originally Posted by bhagya2340
I dont want to compare file and remove duplicates....i want to cheack if that pattern is already present in the file then remove it and replace it with the input....if not just place the input...
The partten here CUR_MAINT_DATE...
Seemed overkill to me to replace a line of data with an exact duplicate, when you can use a command that will get you only the newest data. 'comm' has options on the output.

Quote:
i want something with grep, sid and awk...
What if that made things more complicated than they need to be?

Granted I could be missing something that you either haven't mentioned, or I just don't undestand your explanation very well. But if I understand you correctly, the file that should have all the data added to it is 'time.out' and that data is coming from 'runtime.out'

If the structure of both files are the same as you posted in your first post, then the comm command will work for you.

Code:
comm -23 runtime.out time.out >> time.out

You don't even need to run it through tr to get rid of tabs, since only the data in runtime.out not appearing in time.out will be printed in the first column w/o any added tabs.
 

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lchage(8)						      System Manager's Manual							 lchage(8)

NAME
lchage - Display or change user password policy SYNOPSIS
lchage [OPTION]... user DESCRIPTION
Displays or allows changing password policy of user. OPTIONS
-d, --date=days Set the date of last password change to days after Jan 1 1970. -E, --expire=days Set the account expiration date to days after Jan 1 1970. Set days to -1 to disable account expiration. -i, --interactive Ask all questions when connecting to the user database, even if default answers are set up in libuser configuration. -I, --inactive=days Disable the account after days after password expires (after the user user is required to change the password). -l, --list Only list current user's policy and make no changes. -m, --mindays=days Require at least days days between password changes. Set days to 0 to disable this checking. -M, --maxdays=days Require changing the password after days since last password change. Set days to 99999 to disable this checking. -W, --warndays=days Start warning the user days before password expires (before the user is required to change the password). EXIT STATUS
The exit status is 0 on success, nonzero on error. libuser Jan 12 2005 lchage(8)
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