A. You can use any one of the following command to change user passwords upon the first login:
[a] usermod command - Modify various user account properties including user password expiry information.
Where,
[b] chage command - Change user password expiry information
Task: Use chage command to force users to chage their password upon first login
Use the following syntax:chage -d 0 {user-name}
# chage -d 0 tom
- -d 0 : Set the number of days since January 1st, 1970 when the password was last changed. The date may also be expressed in the format YYYY-MM-DD. By setting it to zero, you are going to force user to change password upon first login.
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