Linux usermod command

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Linux usermod command is used to modify user accounts.

usermod can be used to modify various settings of user accounts.

Syntax

usermod [-LU][-c <remark>][-d <login directory>][-e <validity period>][-f <buffer days>][-g <group>][-G <group>][-l <account name>][-s <shell>][-u <uid>][User account]

Parameter Description:

• -c<remark> 　Modify the remark text of the user account.
• -d<login directory> 　Modify the directory when the user logs in.
• -e<validity period> 　Modify the validity period of the account.
• -f<buffer days> 　Modify the number of days after the password expires to close the account.
• -g<group> 　Modify the group of the user.
• -G<group> 　Modify the additional group of the user.
• -l<account name> 　Modify the user account name.
• -L 　Lock user password, making the password invalid.
• -s<shell> 　Modify the shell used after user login.
• -u<uid> 　Modify user ID.
• -U 　Remove password lock.

Online Examples

Change the login directory

# usermod -d /home/hnlinux root

Change the user's uid

# usermod -u 777 root

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