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2. linux - How to find out what group a given user has? - Stack...

   stackoverflow.com/questions/350141

   19. On Linux/OS X/Unix to display the groups to which you (or the optionally specified user) belong, use: id -Gn [user] which is equivalent to groups [user] utility which has been obsoleted on Unix. On OS X/Unix, the command id -p [user] is suggested for normal interactive. Explanation on the parameters:

3. Check if a user is in a group in Bash - Stack Overflow

   stackoverflow.com/questions/18431285

   Parsing is not efficient and can introduce unexpected broken corner-cases, for instance with the root user (that is not explicitly in any group), but also causing problems if a particular group/user is crafted with a dash in the name (-) or something else equally unpredictable, that may change from distribution to distribution.

4. unix - How to list all users in a Linux group? - Stack Overflow

   stackoverflow.com/questions/2835368

   7. You can do it in a single command line: cut -d: -f1,4 /etc/passwd | grep $(getent group <groupname> | cut -d: -f3) | cut -d: -f1. Above command lists all the users having groupname as their primary group. If you also want to list the users having groupname as their secondary group, use following command.

5. How do I determine the user Apache is run as? - Stack Overflow

   stackoverflow.com/questions/5342956

   The scenario is, I want to first check whether the concerned directories are writable by apache user programtically using php, and in case if they are not writable, then ask to user to give write permissions to the apache user..... so i want to know, what is apache user, how can i give write permissions to it, and how can i test it ...

6. Linux, Why can't I write even though I have group permissions?

   stackoverflow.com/questions/5054888

   So that means my user (user_in_apache_group) has no write permission for that folder. The solution is what @techtonik said, add write permission for user: [user_in_apache_group@web02 html]$ sudo setfacl -m u:user_in_apache_group:rwx ./ilias5. Check permission again: [user_in_apache_group@web02 html] getfacl ilias5.

7. Linux mount NFS with specific user - Stack Overflow

   stackoverflow.com/questions/26323695

   I'm not sure if the usernames can be different or not. Also make sure that the directory being exported on the server is writable by the user or group. See this blog post for additional info about setting up NFS in a similar manner. Caution: This is an insecure configuration without authentication. Use NFS v4 with Kerberos for strong ...

8. linux - Add user to group but not reflected when run "id" - Stack...

   stackoverflow.com/questions/7537197

   If you run a Debian based system, you can do it with. sudo adduser matt staff. The adduser utility is just a friendly wrapper around useradd/usermod etc. If you don't have the adduser utility, you can still do it with usermod: sudo usermod -a -G staff matt. The -a flag means append (as opposed to overwrite).

9. linux - Can't add user to docker group - Stack Overflow

   stackoverflow.com/questions/56305613

   The newgrp command is very different from usermod -aG GROUP USER: the latter adds group GROUP to USER, without changing the primary group of USER; the newgrp creates a new shell and in that shell, the USER's primary group changes to GROUP! This is not likely the desired effect: the OP still wants files created by USER to belong to user's ...

10. How to create user in linux by providing uid and gid options?

    stackoverflow.com/questions/23601844

    First, create the group if it doesn't exist: $ groupadd -g 4200 sysadmin2. Next, create the user and add it to the group: $ useradd sysadmin2 -u 4201 -g 4200 -m -s /bin/bash. $ useradd appadmin1 -u 4100 -g 4100 -m -s /bin/bash. and don't forget to reset password for each user. edited Oct 25, 2021 at 0:10. Asclepius.

11. Proper way to get groups of a user in linux using C

    stackoverflow.com/questions/22104383

    $ groups ---- lists all the group id's of the user. There is a method called getgroups() but it returns the groups of the user this method. Is there a way to get groups for a particular user using C.