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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
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