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UNIX for Dummies Questions & Answers
newgrp in a script
Post 46083 by Perderabo on Thursday 8th of January 2004 08:08:13 AM
01-08-2004
The newgrp command fires up a subshell. When you run it by hand, the subshell reads the next commands. You are running newgrp in a script. The script continues to read the commands while the subshell does nothing.
You don't need newgrp anymore. It was needed when you could only be in one group at a time. Now you can be in many at a time. Type "groups" to see your list.
newgrp has been obsolete for over a decade. But this is the second question on newgrp in the past few weeks.
You don't need newgrp anymore. It was needed when you could only be in one group at a time. Now you can be in many at a time. Type "groups" to see your list.
newgrp has been obsolete for over a decade. But this is the second question on newgrp in the past few weeks.
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LEARN ABOUT V7
sg
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 4.5 01/25/2018 SG(1)