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| author | Xi Ruoyao <xry111@mengyan1223.wang> | 2022-05-02 16:02:10 +0800 |
|---|---|---|
| committer | Xi Ruoyao <xry111@mengyan1223.wang> | 2022-05-02 16:02:10 +0800 |
| commit | 7c862eac22b81a8224a9b9c549bb2eebb3f77b7f (patch) | |
| tree | 6c38b31fd2f9a33c16c1ceaeb957e04f02edfa26 | |
| parent | 0414633793e568fd49a4b1fbae74fada9ab48838 (diff) | |
GID 5 (for tty) is also special
| -rw-r--r-- | chapter07/createfiles.xml | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/chapter07/createfiles.xml b/chapter07/createfiles.xml index 71cb39c1f..eda30ed2e 100644 --- a/chapter07/createfiles.xml +++ b/chapter07/createfiles.xml @@ -165,9 +165,14 @@ EOF</userinput></screen> url="http://refspecs.linuxfoundation.org/lsb.shtml"/>) only recommends that, besides the group <systemitem class="groupname">root</systemitem> with a Group ID (GID) of 0, a group <systemitem class="groupname">bin</systemitem> - with a GID of 1 be present. All other group names and GIDs can be chosen - freely by the system administrator since well-written programs do not depend - on GID numbers, but rather use the group's name.</para> + with a GID of 1 be present. The GID of 5 is widely used for + <systemitem class="groupname">tty</systemitem> group, and the number 5 is + also used in <phrase revision="systemd">systemd</phrase> + <phrase revision="sysv"><filename>/etc/fstab</filename></phrase> for the + <systemitem class="filesystem">devpts</systemitem> filesystem. + All other group names and GIDs can be chosen freely by the system + administrator since well-written programs do not depend on GID numbers, + but rather use the group's name.</para> <para>The ID 65534 is used by the kernel for NFS and separate user namespaces for unmapped users and groups (those exist on the NFS server |