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Below is my real and effective UIDs and GIDs. My task is to implement a bash script (Ubuntu 10.10 desktop) which should auto create 3 directories rtkit, admin, pr007drdl (group names) in /home directory.

Once I have the bash script, I will create an init start/stop script, so should create directories when user logs in. I am totally new to bash scripting. Please help. Thanks in advance. I have no idea where gids' and uids' stored.

uid=10002(sandy) 
gid=119(rtkit) groups=119(rtkit),10001(admin),10003(pr007drdl)
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1 Answer

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something like that:

#!/bin/bash
sudo mkdir -p /home/{rtkit,admin,pr007drdl} #I use `-p' option to produce no error if exist
sudo chown :admin /home/admin
sudo chown :rtkir /home/rtkit
sudo chown :pr007drdl /home/pr007drdl

Group ids are stored in /etc/group . uids are stored in /etc/passwd . You can watch them with getent command. For example

getent passwd username

will return information about user username.

But I'm not sure, that you're on the right way with creating directories every system start. It's seems not like unixway (:

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thnx for the information @Rush, This would be static. what if there's a LDAP server, with 5 clients. Say, each time Administrator creates a group on server, and the same has to be reflected on all 5 clients, with respective groups. – nuthan Jan 17 '12 at 12:36

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