useradd / groupadd

 

1. useradd -m -k /etc/common ihdcp
• /etc/skel 디렉토리가 아닌 /etc/common 디렉토리의 환경 설정 파일을 이용하여 ihdcp 계정 생성

 

2. useradd -g admin -G support -s /bin/bash ihd
• 로그인 이름 : ihd
• 소속될 그룹 : admin(기본 그룹), support
• 기본 쉘(Shell) : /bin/bash

 

3. groupadd -g 700 ihdcp
• ihd 의 그룹 ihdcp 의 GID 를 700 번으로 생성하는 명령어

 

4. usermod -g 700 ihd
• ihd 의 그룹 아이디를 700 번으로 변경하는 명령어

 

 

 

Usage: useradd [options] LOGIN   Options:   -b, --base-dir BASE_DIR       base directory for the new user account                                 home directory   -c, --comment COMMENT         set the GECOS field for the new user account   -d, --home-dir HOME_DIR       home directory for the new user account   -D, --defaults                print or save modified default useradd                                 configuration   -e, --expiredate EXPIRE_DATE  set account expiration date to EXPIRE_DATE   -f, --inactive INACTIVE       set password inactive after expiration                                 to INACTIVE   -g, --gid GROUP               force use GROUP for the new user account   -G, --groups GROUPS           list of supplementary groups for the new                                 user account   -h, --help                    display this help message and exit   -k, --skel SKEL_DIR           specify an alternative skel directory   -K, --key KEY=VALUE           overrides /etc/login.defs defaults   -l,                           do not add the user to the lastlog and                                 faillog databases   -m, --create-home             create home directory for the new user                                 account   -N, --no-user-group           do not create a group with the same name as                                 the user   -o, --non-unique              allow create user with duplicate                                 (non-unique) UID   -p, --password PASSWORD       use encrypted password for the new user                                 account   -r, --system                  create a system account   -s, --shell SHELL             the login shell for the new user account   -u, --uid UID                 force use the UID for the new user account   -U, --user-group              create a group with the same name as the user