/etc/group
This file
contains the group names with GID (group identifier) and defines which user
belongs to which group. It is a simple
text file stored under “etc” directory.
The “/etc/group” file has a similar role for groups as the “/etc/passwd”
file has for users. This file contains one entry per line and each entry has
four fields that are separated by a colon (:).
The entry in
this file looks like given below:
Groupname: password: GID:list of users
|
Field |
Description |
|
Groupname |
The name of the group. |
|
Password |
The encrypted password of the
group represented by x. |
|
GID |
This field contains the group
identification number. |
|
List of users |
It contains the names of users
that are members. |
To access the “/etc/group” file you can use commands like cat, tail, head, etc.
From the above image “hockey” is a group
name, “x” is the encrypted password, 1004 is a GID, and user2, john, and user1
are the members of the group hockey.
The
command “cat” is short of “concatenate” it allows us to view file content,
redirect output in terminal or file, create single or multiple files, and
concatenate files.
The “pipe” is a vertical bar (|) on the
command line between two commands. The pipe basically takes the output from one
command and use it as input for another command.
The “grep” stands for (globally search for a regular expression and print out) is used to filter search through a pattern of
characters, and displays all lines related to the pattern.
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