12-28-2004
Set the group of the file that needs to be executed to the group used by the three users, and chmod the file to... 770.
example:
-wrxwrx--- root jgroup /usr/bin/tail
in /etc/group (your milage may vary)
be sure john, brad and dave are in group jgroup.
Change as needed.
`ps` will show which user has executed the file, but only root and those in the group will be able to use the file.
Cheers,
-Seg
ps: to log who used it create a script file to echo $user $tty `date` to a file then execute the process...
Quote:
#!/bin/csh
echo "$user $tty `date`" >> /var/log/jgroup.log
/usr/bin/jgroupfile
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LEARN ABOUT DEBIAN
lfc-chown
LFC-CHOWN(1) LFC User Commands LFC-CHOWN(1)
NAME
lfc-chown - change owner and group of a LFC directory/file in the name server
SYNOPSIS
lfc-chown [-h] [-R] owner[:group] path...
lfc-chown [-h] [-R] :group path...
DESCRIPTION
lfc-chown sets the owner and/or the group of a LFC directory/file in the name server to the values in owner and group respectively.
To change the owner ID, if the group ID does not change and if the caller and the new owner ID belong to that group, GRP_ADMIN privilege is
needed, otherwise the caller must have ADMIN privilege in the Cupv database. To change the group ID, the effective user ID of the process
must match the owner ID of the file and the new group must be in the list of groups the caller belong to or the caller must have ADMIN
privilege in the Cupv database.
owner is either a valid username or a valid numeric ID.
group is either a valid group name or a valid numeric ID.
path specifies the LFC pathname. If path does not start with /, it is prefixed by the content of the LFC_HOME environment variable.
OPTIONS
The following options are supported:
-h If path is a symbolic link, changes the ownership of the link itself.
-R Recursive mode.
EXIT STATUS
This program returns 0 if the operation was successful or >0 if the operation failed.
SEE ALSO
Castor_limits(4), lfc_chown(3), Cupvlist(1)
AUTHOR
LCG Grid Deployment Team
LFC
$Date: 2007/01/15 08:05:17 $ LFC-CHOWN(1)