Answer :
You have hired a contractor and have a set number of months that his user account will be active for the shadow password command will you use and the file will be acted upon to set this user's account timeout.
What is a chage command?
The "update user password expiry information" tool is what the chage command refers to itself as. The chage command modifies the last password change date and the number of days between password updates, according to the chage man page.
A shadow password file, password file is a system file in Linux that only the root user can access that saves encrypted user passwords, preventing malevolent users or unauthorized users from accessing the system.
Thus, The password is locked if the field for it begins with an exclamation point. The remaining characters indicate the password field prior to the password being locked on the line.
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