newgrp man page on HP-UX

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newgrp(1)							     newgrp(1)

       newgrp - switch to a new group


       The  command  changes  your  group ID without changing your user ID and
       replaces your current shell with a new one.

       If you specify group, the change is  successful	if  group  exists  and
       either  your user ID is a member of the new group, or group has a pass‐
       word and you can supply it from the terminal.

       If you omit group, changes to the group specified in your entry in  the
       password file,

       Whether	the  group is changed successfully or not, or the new group is
       the same as the old one or not, proceeds to replace your current	 shell
       with  the one specified in the shell field of your password file entry.
       If that field is empty, uses the POSIX shell, (see sh-posix(1)).

       If you specify (hyphen) as the first argument, the new shell starts  up
       as  if  you had just logged in.	If you omit the new shell starts up as
       if you had invoked it as a subshell.

       You remain logged in and the current directory is unchanged, but calcu‐
       lations	of  access  permissions to files are performed with respect to
       the new real and effective group IDs.

       Exported variables retain their values and are passed to the new shell.
       All  unexported variables are deleted, but the new shell may reset them
       to default values.

       Since the current process is replaced when the new  shell  is  started,
       exiting	from  the  new	shell  has the same effect as exiting from the
       shell in which was executed.

   International Code Set Support
       Characters from the 7-bit USASCII code set are supported in group names
       (see ascii(5)).

       The command issues the following error messages:

       Your user		     ID does not qualify as a group member.

       The group name does not exist in

       If a password is required, it must come from a terminal.

       Standard input is not a terminal file,
				     causing the new shell to fail.

       To  change from your current group to group without executing the login

       To change from your current group to group and execute the  login  rou‐

       There is no convenient way to enter a password into

       The  use	 of  group passwords is not recommended because, by their very
       nature, they encourage poor security practices.	Group passwords may be
       eliminated in future HP-UX releases.

       If  the	specified group to has multiple inconsistent entries (i.e. the
       group id or/and password are different) in  the	group  database,  will
       consider	 the group id and password of the first matched group entry as
       the correct group id and password for the group.

       System group file
       System password file

       csh(1), ksh(1), login(1), sh-posix(1), group(4), passwd(4), environ(5).


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