[Linux 명령어] useradd 옵션 설명

useradd --help

Usage: useradd [options] LOGIN
       useradd -D
       useradd -D [options]

Options:
  -b, --base-dir BASE_DIR       base directory for the home directory of the
                                new account
  -c, --comment COMMENT         GECOS field of the new account
  -d, --home-dir HOME_DIR       home directory of the new account
  -D, --defaults                print or change default useradd configuration
  -e, --expiredate EXPIRE_DATE  expiration date of the new account
  -f, --inactive INACTIVE       password inactivity period of the new account
  -g, --gid GROUP               name or ID of the primary group of the new
                                account
  -G, --groups GROUPS           list of supplementary groups of the new
                                account
  -h, --help                    display this help message and exit
  -k, --skel SKEL_DIR           use this alternative skeleton directory
  -K, --key KEY=VALUE           override /etc/login.defs defaults
  -l, --no-log-init             do not add the user to the lastlog and
                                faillog databases
  -m, --create-home             create the user's home directory
  -M, --no-create-home          do not create the user's home directory
  -N, --no-user-group           do not create a group with the same name as
                                the user
  -o, --non-unique              allow to create users with duplicate
                                (non-unique) UID
  -p, --password PASSWORD       encrypted password of the new account
  -r, --system                  create a system account
  -R, --root CHROOT_DIR         directory to chroot into
  -s, --shell SHELL             login shell of the new account
  -u, --uid UID                 user ID of the new account
  -U, --user-group              create a group with the same name as the user
  -Z, --selinux-user SEUSER     use a specific SEUSER for the SELinux user mapping

-r : 시스템 계정 지정

-g : 그룹지정

-d : 디렉토리 지정

-s : 쉘(shell) 지정

-p : 패스워드(암호) 지정

 

 

ex) useradd -r -g wildfly -d /opt/wildfly -s /sbin/nologin wildfly

-r : 시스템 계정 지정

-g : wildfly란 그룹에 지정 

-d : /opt/wildfly 란 디렉토리로 지정

-s : /sbin/nologin 란 로그인쉘로 지정

 

*nologin 계정이란?

2021.09.08 - [OS/Linux] - [Linux] nologin 계정이란? (/etc/passwd에서 로그인 쉘)