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Remove Sections from Each Line of Files in Linux
In this article, we will learn to remove sections from each line of files in the Linux/Unix operating system.
To remove selected parts of lines from each FILE, we use the cut command in the Linux system.
The cut command is used to remove and print the selected section of each FILE in the Linux operating system using a terminal. It is also used to cut the selected parts of a line by byte position, character, and field. It is also been ported to the IBM i operating system.
Syntax
The general syntax of the cut command is as follows
cut OPTION... [FILE]...
Brief description of options available in the cut command.
| Sr.No. | Option & Description |
|---|---|
| 1 |
-b, --bytes=LIST Select only specifies bytes |
| 2 |
-c, --characters=LIST Select only specifies characters |
| 3 |
-d, --delimiter=DELIM Specify delimiter instead of TAB |
| 4 |
-f, --fields=LIST Select only specified fields, and display any line that without delimiter, unless the -s option is specified |
| 5 |
-n With option -b, do not split multibyte characters |
| 6 |
--complement Complement the set of selected bytes, characters, or fields |
| 7 |
-z, --zero -terminated Line delimiter is NULL, not newline |
| 8 |
--help Display this help and exit |
| 9 |
--version Output version information and exit |
Example
To cut the specifies bytes from every column without range, we use -b or --byte option with the cut command in the Linux system.
Here, we will cut only two bytes from every column from a file as shown below.
vikash@tutorialspoint: ~/shadow$ cut -b 1,2 text1.txt ar ry sa st to ut va vikash@tutorialspoint− ~/shadow$
To cut the specified character from every column, we use -c or --characters option with the cut command in the Linux system.
Here, we will cut only the first, second, and fourth characters from every column from a file as shown below.
vikash@tutorialspoint − ~/shadow$ cut -c 1,2,4 text1.txt ara ryn sa stv to uta vah vikash@tutorialspoint − ~/shadow$
To cut the specified range character from each column, we need to specify range with -c option as shown below.
vikash@tutorialspoint −~/shadow$ cut -c 2-4 text1.txt rya yan am tev om tka ash
In the above example, we cut the second to fourth characters from each column from a file in the Linux system.
To check more information about the cut command, we use the --help option with the cut command as shown below.
$ cut --help
To check version information of the cut command, we use the --version option with the cut command as shown below.
$ cut --version
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