Usermod command in Linux
The usermod command or modify user is a command in Linux that is used to change the properties of a user in Linux through the command line. After creating a user we have to sometimes change their attributes like password or login directory etc. so in order to do that we use the usermod command. The information of a user is stored in the following files:
- /etc/passwd
- /etc/group
- /etc/shadow
- /etc/login.defs
- /etc/gshadow
- /etc/login.defs
When we execute usermod command in temrinal the command make the changes in these files itself.
1. To add a comment for a user
This will add a comment about the user or a short description related to the user.
2. To change the home directory of a user
This will change the home directory of the user to /home/manav.
3. To change the expiry date of a user
This will change the expiration date of account %u201Ctest_user%u201D
4. To change the group of a user
This command will now change the group of test user from test_user to manav
5. To change user login name
This will now change the login name of the user %u201Ctest_user%u201D.
6. To lock a user
This will lock the %u201Ctest_user%u201D account and will display a! sign in shadow file before the username
7. To unlock a user
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