Difference between revisions of "groupadd/archive/2005"
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==Text== | ==Text== | ||
===Name=== | ===Name=== | ||
| − | :'''groupadd''' - Create a new group | + | : '''[[groupadd]]''' - Create a new group |
===Synopsis=== | ===Synopsis=== | ||
| − | :'''standard:''' groupadd [-g <u>gid</u> [-o]] | + | : '''standard:''' groupadd [-g <u>gid</u> [-o]] <u>group</u> |
| − | <u>group</u> | + | : '''Red Hat:''' groupadd [-g <u>gid</u> [-o]] [-r] [-f] <u>group</u> |
| − | :'''Red Hat:''' groupadd [-g <u>gid</u> [-o]] [-r] [-f] | ||
| − | <u>group</u> | ||
===Description=== | ===Description=== | ||
| − | :The groupadd command creates a new group account using the values | + | : The [[groupadd]] command creates a new [[Linux/groups|group]] account using the values specified on the command line and the default values from the system. The new group will be entered into the system files as needed. The options which apply to the groupadd command are |
| − | specified on the command line and the default values from the system. | ||
| − | The new group will be entered into the system files as needed. The | ||
| − | options which apply to the groupadd command are | ||
{| margin=3 | {| margin=3 | ||
|- | |- | ||
| width=10% valign=top | '''-g <u>gid</u>''' | | width=10% valign=top | '''-g <u>gid</u>''' | ||
| − | | The numerical value of the group's ID. This value must be unique, | + | | The numerical value of the group's ID. This value must be unique, unless the -o option is used. The value must be non-negative. The default is to use the smallest ID value greater than 500 and greater than every other group. Values between 0 and 499 are typically reserved for system accounts. |
| − | unless the -o option is used. The value must be non-negative. The | ||
| − | default is to use the smallest ID value greater than 500 and greater | ||
| − | than every other group. Values between 0 and 499 are typically reserved | ||
| − | for system accounts. | ||
|- | |- | ||
| colspan=2 bgcolor=#eeeeee | Red Hat Linux only: | | colspan=2 bgcolor=#eeeeee | Red Hat Linux only: | ||
|- | |- | ||
| width=10% valign=top | '''-r''' | | width=10% valign=top | '''-r''' | ||
| − | | This flag instructs groupadd to add a system account. The first | + | | This flag instructs groupadd to add a system account. The first available gid lower than 499 will be automatically selected unless the -g option is also given on the command line. This is an option added by Red Hat. |
| − | available gid lower than 499 will be automatically selected unless the | ||
| − | -g option is also given on the command line. This is an option added by | ||
| − | Red Hat. | ||
|- | |- | ||
| width=10% valign=top | '''-f''' | | width=10% valign=top | '''-f''' | ||
| − | | This is the force flag. This will cause groupadd to exit with an | + | | This is the force flag. This will cause groupadd to exit with an error when the group about to be added already exists on the system. If that is the case, the group won't be altered (or added again). This option also modifies the way -g option works. When you request a gid that it is not unique and you don't specify the -o option too, the group creation will fall back to the standard behavior (adding a group as if neither -g or -o options were specified). This is an option added by Red Hat. |
| − | error when the group about to be added already exists on the system. If | ||
| − | that is the case, the group won't be altered (or added again). This | ||
| − | option also modifies the way -g option works. When you request a gid | ||
| − | that it is not unique and you don't specify the -o option too, the | ||
| − | group creation will fall back to the standard behavior (adding a group | ||
| − | as if neither -g or -o options were specified). | ||
| − | This is an option added by Red Hat. | ||
|} | |} | ||
===Files=== | ===Files=== | ||
| − | *'''/etc/group''' - group account information | + | * '''/etc/group''' - group account information |
| − | *'''/etc/gshadow''' - secure group account information | + | * '''/etc/gshadow''' - secure group account information |
===See Also=== | ===See Also=== | ||
| − | [[chfn]](1), [[chsh]](1), [[passwd]](1), [[groupdel]](8), | + | [[chfn]](1), [[chsh]](1), [[passwd]](1), [[groups]](1), [[groupdel]](8), [[groupmod]](8), [[useradd]](8), [[userdel]](8), [[usermod]](8) |
| − | [[groupmod]](8), [[useradd]](8), [[userdel]](8), [[usermod]](8) | ||
===Author=== | ===Author=== | ||
| − | :Julianne Frances Haugh (jockgrrl | + | : Julianne Frances Haugh ({{email|jockgrrl|ix.netcom|com}}) |
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==Edit Log== | ==Edit Log== | ||
| − | *2005-06-09 Transcribed from Red Hat | + | *'''2005-06-09''' Transcribed from Red Hat Linux 7.1 2.96-98 Linux manpages and KUbuntu "hoary" (Debian 1:3.3.5-8ubuntu2) manpages. |
| − | ( | ||
Latest revision as of 19:00, 23 April 2017
Text
Name
- groupadd - Create a new group
Synopsis
- standard: groupadd [-g gid [-o]] group
- Red Hat: groupadd [-g gid [-o]] [-r] [-f] group
Description
- The groupadd command creates a new group account using the values specified on the command line and the default values from the system. The new group will be entered into the system files as needed. The options which apply to the groupadd command are
| -g gid | The numerical value of the group's ID. This value must be unique, unless the -o option is used. The value must be non-negative. The default is to use the smallest ID value greater than 500 and greater than every other group. Values between 0 and 499 are typically reserved for system accounts. |
| Red Hat Linux only: | |
| -r | This flag instructs groupadd to add a system account. The first available gid lower than 499 will be automatically selected unless the -g option is also given on the command line. This is an option added by Red Hat. |
| -f | This is the force flag. This will cause groupadd to exit with an error when the group about to be added already exists on the system. If that is the case, the group won't be altered (or added again). This option also modifies the way -g option works. When you request a gid that it is not unique and you don't specify the -o option too, the group creation will fall back to the standard behavior (adding a group as if neither -g or -o options were specified). This is an option added by Red Hat. |
Files
- /etc/group - group account information
- /etc/gshadow - secure group account information
See Also
chfn(1), chsh(1), passwd(1), groups(1), groupdel(8), groupmod(8), useradd(8), userdel(8), usermod(8)
Author
- Julianne Frances Haugh (jockgrrlspam@spamix.netcomspam.spamcom)
Edit Log
- 2005-06-09 Transcribed from Red Hat Linux 7.1 2.96-98 Linux manpages and KUbuntu "hoary" (Debian 1:3.3.5-8ubuntu2) manpages.