How to check which groups exist in Linux

In Linux, you can use the cat command to check which groups there are. This command is used to connect files and print to the standard output device. The syntax is "cat /etc/group"; "/ect/group" file It is the user group configuration file, that is, all the information of the user group is stored in this file.

#The operating environment of this tutorial: linux7.3 system, Dell G3 computer.

How to check which groups are there in Linux

The cat (full English spelling: concatenate) command is used to connect files and print to the standard output device .

The syntax is:

cat [-AbeEnstTuv] [--help] [--version] fileName

/ect/group file is the user group configuration file, that is, all the information of the user group is stored in this file.

Parameter description:

• -n or --number: Number all output lines starting from 1.

• -b or --number-nonblank: Similar to -n, except that blank lines are not numbered.

• -s or --squeeze-blank: When encountering more than two consecutive blank lines, replace them with one blank line.

• -v or --show-nonprinting: Use the ^ and M- symbols except LFD and TAB.

• -E or --show-ends : Display $ at the end of each line.

• -T or --show-tabs: Display TAB characters as ^I.

• -A, --show-all: Equivalent to -vET.

• -e: Equivalent to the "-vE" option;

• -t: Equivalent to the "-vT" option;

The example is as follows:

Output result:

Related Recommended: "Linux Video Tutorial"

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