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Full Discussion: command to group records
Top Forums Shell Programming and Scripting command to group records Post 302342562 by kshji on Monday 10th of August 2009 08:29:46 AM
Old 08-10-2009
Only examples to use, because defination not included input and output (file, cmd, ...).
Script read data from stdin and write data to the stdout. Caller can tell what is stdin and stdout.

From file to the terminal:
Code:
./join.sh < testfile.txt

Output is:
Code:
20,payal@gmail.com
20,30,40,ravi@yahoo.com

If you like to save result then ex. to file:
Code:
./join.sh < testfile.txt > result.txt

 

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SG(1)								   User Commands							     SG(1)

NAME
sg - execute command as different group ID SYNOPSIS
sg [-] [group [-c ] command] DESCRIPTION
The sg command works similar to newgrp but accepts a command. The command will be executed with the /bin/sh shell. With most shells you may run sg from, you need to enclose multi-word commands in quotes. Another difference between newgrp and sg is that some shells treat newgrp specially, replacing themselves with a new instance of a shell that newgrp creates. This doesn't happen with sg, so upon exit from a sg command you are returned to your previous group ID. CONFIGURATION
The following configuration variables in /etc/login.defs change the behavior of this tool: SYSLOG_SG_ENAB (boolean) Enable "syslog" logging of sg activity. FILES
/etc/passwd User account information. /etc/shadow Secure user account information. /etc/group Group account information. /etc/gshadow Secure group account information. SEE ALSO
id(1), login(1), newgrp(1), su(1), gpasswd(1), group(5), gshadow(5). shadow-utils 4.1.5.1 05/25/2012 SG(1)
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