[리눅스] useradd 명령어

useradd 명령어

사용법: useradd  [-u uid(사용자 아이디) [-o]] [-g 그룹명][-G 그룹,...]
                     [-d 홈디렉토리][-s 쉘][-c 적요사항][-m [-k template]]
                     [-f 비활성화] [-e 만기] [-p passwd] [-M] [-n] [-r] [-l] name
       useradd -D [-g 그룹명][-b 초기디렉토리][-s 쉘]
                     [-f 비활성화] [-e 만기]

apache 계정 생성

useradd -c "Apache" -u 48 -s /sbin/nologin -m -d /home/www apache

vim /etc/passwd

apache:x:48:48:Apache:/home/www:/sbin/nologin

mysql 계정 생성

useradd -m -c "MySQL Server" -d /usr/local/mysql -s /bin/false -u 27 mysql

tomcat 계정 생성

groupadd tomcat

useradd -c "Tomcat Service" -m -d /apps/tomcat -s /usr/sbin/nologin -g tomcat tomcat

amen 그룹 및 계정 생성

groupadd -g 1001 amen

useradd -m -c "System Account" -d /home/amen -s /bin/bash -u 1001 -g 1001 amen

$ cat /etc/group
amen:x:1001:

$ cat /etc/passwd
amen:x:1001:1001:System Account:/home/amen:/bin/bash

사용법

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

Options:
      --badnames                do not check for bad names
  -b, --base-dir BASE_DIR       base directory for the home directory of the
                                new account
      --btrfs-subvolume-home    use BTRFS subvolume for home directory
  -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
  -P, --prefix PREFIX_DIR       prefix directory where are located the /etc/* files
  -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
      --extrausers              Use the extra users database