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Diffstat (limited to 'chapter_09.xml')
| -rw-r--r-- | chapter_09.xml | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/chapter_09.xml b/chapter_09.xml index a2bb4e9..c2866e0 100644 --- a/chapter_09.xml +++ b/chapter_09.xml @@ -180,6 +180,29 @@ encrypted password to a value that can't be matched. </para> <para> +The easiest way for modifying a user's information is the +<application>usermod</application>(8) utility which is capable of +modifying everything from group membership to home directories. A full +listing of its features won't be given here, so check the man page. +<application>usermod</application> is perhaps the best tool to use for +modifying a user's group members. The <arg>-s</arg> and <arg>-G</arg> +arguments accomplish this. +</para> + +<screen><prompt>darkstar:~# </prompt><userinput>usermod -a -G wheel alan</userinput> +<prompt>darkstar:~# </prompt><userinput>usermod -G wheel alan</userinput> +</screen> + +<para> +It important to note the differences in the two commands above. The +first command adds the user "alan" to the "wheel" group without +modifying any other groups "alan" belongs to. The second command also +makes "alan" a member of the "wheel" group, but also removes the user's +membership from any other groups, something you will very rarely want +to do! +</para> + +<para> Another useful tool is <application>chsh</application>(1) which changes a user's default shell. Like <application>passwd</application>, normal users can only change their own shell, but the root user can change |