GROUPMOD(8) GROUPMOD(8) 名前 groupmod - グループを修正する 書式 groupmod [-g gid [-o]] [-n group_name] group 説明 groupmod コマンドは、コマンドラインからの指定によって、システムアカウン トファイルを修正する。 groupmod コマンドに指定できるオプションは次の 通 り。 -g gid 変更を受けるグループの ID 番号。この値は、-o オプションを用いる 場合を除き、他と重複してはならない。また非負値でなくてはならない 。デフォルトは、999 および他のあらゆる既存グループの ID よりも大 きい、最小の数値となる。変更前のグループ ID を持つ全てのファイル は、手作業で新しいグループ ID へと変更しなければならない。 -n group_name グループの名前が group から group_name に変更される。 ファイル /etc/group - グループ情報 /etc/gshadowI - 安全なグループ情報 関連項目 chfn(1), chsh(1), passwd(1), groupadd(8), groupdel(8), useradd(8), userdel(8), usermod(8) 著者 Julianne Frances Haugh (jockgrrl@ix.netcom.com) GROUPMOD(8)
GROUPMOD(8) System Management Commands GROUPMOD(8) NAME groupmod - modify a group definition on the system SYNOPSIS groupmod [options] GROUP DESCRIPTION The groupmod command modifies the definition of the specified GROUP by modifying the appropriate entry in the group database. OPTIONS The options which apply to the groupmod command are: -g, --gid GID The group ID of the given GROUP will be changed to GID. The value of GID must be a non-negative decimal integer. This value must be unique, unless the -o option is used. Users who use the group as primary group will be updated to keep the group as their primary group. Any files that have the old group ID and must continue to belong to GROUP, must have their group ID changed manually. No checks will be performed with regard to the GID_MIN, GID_MAX, SYS_GID_MIN, or SYS_GID_MAX from /etc/login.defs. -h, --help Display help message and exit. -n, --new-name NEW_GROUP The name of the group will be changed from GROUP to NEW_GROUP name. -o, --non-unique When used with the -g option, allow to change the group GID to a non-unique value. -p, --password PASSWORD The encrypted password, as returned by crypt(3). Note: This option is not recommended because the password (or encrypted password) will be visible by users listing the processes. You should make sure the password respects the system´s password policy. -R, --root CHROOT_DIR Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory. CONFIGURATION The following configuration variables in /etc/login.defs change the behavior of this tool: MAX_MEMBERS_PER_GROUP (number) Maximum members per group entry. When the maximum is reached, a new group entry (line) is started in /etc/group (with the same name, same password, and same GID). The default value is 0, meaning that there are no limits in the number of members in a group. This feature (split group) permits to limit the length of lines in the group file. This is useful to make sure that lines for NIS groups are not larger than 1024 characters. If you need to enforce such limit, you can use 25. Note: split groups may not be supported by all tools (even in the Shadow toolsuite). You should not use this variable unless you really need it. FILES /etc/group Group account information. /etc/gshadow Secure group account information. /etc/login.defs Shadow password suite configuration. /etc/passwd User account information. EXIT VALUES The groupmod command exits with the following values: 0 success 2 invalid command syntax 3 invalid argument to option 4 specified group doesn´t exist 6 specified group doesn´t exist 9 group name already in use 10 can´t update group file SEE ALSO chfn(1), chsh(1), passwd(1), gpasswd(8), groupadd(8), groupdel(8), login.defs(5), useradd(8), userdel(8), usermod(8). shadow-utils 4.1.5.1 05/10/2016 GROUPMOD(8)
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