Add mulitple users to a Linux server.

Shell Script to create multiple users from a list of names in a file.
The script;

• Checks for user's permission to run script.
• Searches for a file named users.csv, where names for users are listed in the current working directory.
• Checks if user group developers exists. If not create user group.
• Check if users to be created with usernames listed in file already exists. If it does, add user to supplementary group developers.
• Create new users with username listed in file.
• Creates .ssh directory in the home directory of users and assign appropriate user permissions to the directory.
• Generates SSH connection authorisation keys for each user in the .ssh directory.

Usage:

Run script with user that have root privileges like thus:

   $ sudo ./adduser.sh

Delete mulitple users from a Linux server.

Shell Script to delete multiple users from a list of names in a file.
The script;

• Checks for user's permission to run script.
• Searches for a file named users.csv, where names for users are listed in the current working directory.
• Check if users to be deleted with name listed in file already exists. Skip if it doesn't.
• Delete existing users and their home diectories with usernames listed in file.

Usage:

Run script with users that have root privileges like thus:

   $ sudo ./deluser.sh