Use of Linux usermod command
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1. Command Introduction The usermod (user modify) command is a system administrator command used to modify a user account. usermod can be used to modify various settings of user accounts and modify system account files to reflect changes specified through the command line. 2. Command format usermod [OPTIONS] LOGIN 3. Option Description -c, --comment Add backup information -d, --home HOME_DIR The user's new home directory -e, --expiredate EXPIRE_DATE Set the account expiration date -f, --inactive INACTIVE After INACTIVE days, set the password to invalid state -g, --gid GROUP Force GROUP to be the new primary group -G, --groups GROUPS New additional group list GROUPS -a, --append GROUP Add the user to the additional groups mentioned in -G above, without removing the user from other groups -h, --help Display this help message and launch -l, --login LOGIN new login name -L, --lock Lock user account -m, --move-home Move the contents of your home directory to a new location (only used with -d) -o, --non-unique Allow duplicate (non-unique) UIDs -p, --password PASSWORD Set the encrypted password (PASSWORD) as the new password -s, --shell SHELL The new login shell for this user account -u, --uid UID New UID for the user account -U, --unlock Unlock user account -Z, --selinux-user SEUSER New SELinux user mapping for user accounts 4. Common Examples (1) Modify the user's home directory. usermod -d /home/tom tom (2) Change the user's uid. usermod -u 888 tom (3) Change the user name to jerry. usermod -l jerry tom (4) Lock the tom user. usermod -L tom （5）Unlock the tom user. usermod -U tom (6) Add new additional groups. usermod -G deng tom (7) Modify the user login shell. usermod -s /bin/sh tom (8) Modify the user's GID. usermod -g 1003 tom (9) Specify the account expiration date. usermod -e 2020-12-31 tom (10) Specify the number of days after the user account password expires before disabling the account. usermod -f 3 tom The above is the detailed content of the use of Linux usermod command. For more information about Linux usermod command, please pay attention to other related articles on 123WORDPRESS.COM! You may also be interested in:
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