01-08-2004
I see that you don't get what I want to do... sorry for my expression in english !!
My project TOTO have a primary group B and a secondary group A
My account have a primary group A and a secondary group B
My colleague C1 has a primary group A and a secondary group B
My colleague C2 has only a primary group A
When I work for TOTO I'd like to have right to write on, from my own account.
Same for my colleague C1. C2 is able to read but not write on TOTO.
For the moment, I have a script wich check if you are authorized to work on the project. If 'yes' the umask is set to 002 and I do newgrp and so on. So that each created file is AUTOMATICALLY created with the group B.
I don't have 'root' permissions. So I can not execute 'chgrp' on the account TOTO for all the files don't belong to me. My application create a lot of files/directory so it is hard to do 'chgrp' each 5 minutes and more hard to request to each user to do the same!!
I try to forget newgrp but... I can't !!
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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)