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Top Forums Shell Programming and Scripting Search a file column wise and delete it Post 302416557 by gotam on Tuesday 27th of April 2010 02:40:05 AM
Old 04-27-2010
Search a file column wise and delete it

Scottn, m really sorry but i have not got my answer yet.
my concern is how to delete the row !!!
i have a file which has a column that is unique
i am intending to serach it and if it is there to remove the row.

the file looks like

Code:
 
ROLLNO,NAME ,SUB1,SUB2,SUB3,TOTAL,PERCENTAGE,RESULT
15 ,rig ,34 ,56 ,87 ,177 ,59 % ,PASS
23 ,wel ,45 ,76 ,56 ,177 ,59 % ,PASS
24 ,rew ,23 ,45 ,67 ,135 ,45 % ,THIRD

if i need to remove the row with a roll num
i have tried with


Code:
 
cut -f1 -d "," studentrec.txt | sed '/"$rollno"/d'
even with 
cut -f1 -d "," studentrec.txt | sed '/"$rollno"/{d;}'

but still unable to get the required result

plz help
 

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SIEVESHELL(1)						User Contributed Perl Documentation					     SIEVESHELL(1)

NAME
sieveshell - remotely manipulate sieve scripts SYNOPSIS
sieveshell [--user=user] [--authname=authname] [--realm=realm] [--password=password] [--exec=script] [--execfile=file] server[:port] sieveshell --help DESCRIPTION
sieveshell allows users to manipulate their scripts on a remote server. It works via MANAGESIEVE, a work in progress. The following commands are recognized: list list scripts on server. put <filename> upload script to server. get <name> [<filename>] get script. if no filename display to stdout delete <name> delete script. activate <name> activate script. deactivate deactivate all scripts. OPTIONS
-u user, --user=user The authorization name to request; by default, derived from the authentication credentials. -a authname, --authname=authname The user to use for authentication (defaults to current user). -r realm, --realm=realm The realm to attempt authentication in. -p password, --password=password The password to use when authenticating to server. Note that this parameter can be seen in the process list. Use with caution! -e script, --exec=script Instead of working interactively, run commands from script, and exit when done. -f file, --execfile=file Instead of working interactively, run commands from file file and exit when done. REFERENCES
[MANAGESIEVE] Martin, T.; "A Protocol for Remotely Managing Sieve Scripts", draft-ietf-managesieve-03.txt, Mirapoint, Inc.; May 2001, work in progress. AUTHOR
Tim Martin <tmartin@mirapoint.com>, and the rest of the Cyrus team <cyrus-bugs@andrew.cmu.edu>. perl v5.14.2 2014-06-03 SIEVESHELL(1)
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