{"id":9051,"date":"2021-08-09T17:49:33","date_gmt":"2021-08-09T17:49:33","guid":{"rendered":"https:\/\/linuxways.net\/?p=9051"},"modified":"2021-08-09T17:49:33","modified_gmt":"2021-08-09T17:49:33","slug":"cut-command-in-linux","status":"publish","type":"post","link":"https:\/\/linuxways.net\/de\/centos\/cut-command-in-linux\/","title":{"rendered":"Cut command in Linux"},"content":{"rendered":"

Introduction<\/h2>\n

Cut is a command used to extract parts of the line from files or piped data and export the result to standard output.<\/p>\n

it’s a built-in command-line utility in Linux and UNIX systems. The cut command can cut parts of the line by byte position, field, and character.<\/p>\n

Below is the guide on how to use the cut command in Linux.<\/p>\n

The syntax of cut command<\/h2>\n
$ cut OPTION\u2026 [FILE]...<\/pre>\n
[options]<\/strong><\/p>\n
-b (byte) <\/strong>Slicing by bytes<\/p>\n
-f (field) <\/strong>Slicing by fields<\/p>\n
-c (character)<\/strong> Slicing by characters<\/p>\n
-d (delimiter) <\/strong> Slicing by delimiter instead of TAB<\/strong> delimiter<\/p>\n
–complement <\/strong>Complement the output<\/p>\n
–output-delimiter <\/strong> Change the output delimiter<\/p>\n
How to use cut command<\/h2>\n
1. -b (byte) <\/strong><\/p>\n
To cut out specific bytes. The range of bytes can be specified with \u201c-\u201d. Tabs and backspaces are also considered 1 byte.<\/p>\n
$ cut -b [file]<\/pre>\n
For example, in hello.txt file contains the text \u201cHello World!<\/strong>\u201d. Now we will cut out specific bytes:<\/p>\n
$ cut -b 1 hello.txt<\/pre>\n
<\/p>\n
In the above command, they output the first character as “H<\/strong>”<\/p>\n
$ cut -b 1,6,7 hello.txt<\/pre>\n
<\/p>\n
In the above command, the output 1st, 6th, and 7th characters. The 6th character is an empty character.<\/p>\n
List with ranges:<\/p>\n
$ cut -b 1-3,7-9 hello.txt<\/pre>\n
<\/p>\n
It also selects bytes from beginning up to the end of the line through a special form:<\/p>\n
$ cut -b 1- hello.txt<\/pre>\n
<\/p>\n
In the above command, the output from the 1st byte to the last byte.<\/p>\n
$ cut -b -4 hello.txt<\/pre>\n
<\/p>\n
In the above command, the output from the 1st byte to the 4th byte.<\/p>\n
2. -f (field)<\/strong><\/p>\n
To extract specific fields. When no delimiter is specified, the default delimiter will be TAB<\/strong>.<\/p>\n
$ cut -f [FILE]<\/pre>\n
For example, here we have field.txt file:<\/p>\n
<\/p>\n
Now we will extract the 1st and the 2nd field:<\/p>\n
$ cut -f 1,2 field.txt<\/pre>\n
Output:<\/p>\n
<\/p>\n
3. -c (character)<\/strong><\/p>\n
To cut by character. This can be a list separated by \u201c.<\/strong>\u201d, \u201c,<\/strong>\u201d, \u201c;<\/strong>\u201d; \u201c–<\/strong>\u201d. Tabs and backspaces are also considered a character.<\/p>\n
$ cut -c [FILE]<\/pre>\n
For example, here we have character.txt file:<\/p>\n
<\/p>\n
Now we will extract the 2nd, 4th, 6th character:<\/p>\n
$ cut -c 2,4,6 character.txt<\/pre>\n
Output:<\/p>\n
<\/p>\n
4. -d (delimiter)<\/strong><\/p>\n
To cut out specific delimiters. This option is often used with -f (field)<\/strong>.<\/p>\n
For example, here we have dlmt.txt file separated by \u201c:<\/strong>\u201d<\/p>\n
<\/p>\n
Now we will extract from the 1st to the 3rd field:<\/p>\n
$ cut -d \":\" -f 1-3 dlmt.txt<\/pre>\n
Output: <\/p>\n
5. –complement<\/strong><\/p>\n
To print all fields except those that are not selected with -f<\/strong> option.<\/p>\n
For example, here we have field.txt file:<\/p>\n
<\/p>\n
Now we will extract all fields except the 1st and 4th fields:<\/p>\n
$ cut --complement -f 1,4 field.txt<\/pre>\n
Output:<\/p>\n
<\/p>\n
6. –output-delimiter<\/strong><\/p>\n
To change the output delimiter.  –output-delimiter=\u201ddelimiter\u201d<\/strong>.<\/p>\n
Now we will extract all fields except the 1st and 4th field but the output is separated by \u201c?<\/strong>\u201d :<\/p>\n
& cut –complement -f 1,4 field.txt –output-delimiter=”?”<\/p>\n
Output:<\/p>\n
<\/p>\n
Conclusion<\/h2>\n
You\u2019ve already gone through the details of how to use the cut command in Linux.<\/p>\n
Thanks for reading.<\/p>","protected":false},"excerpt":{"rendered":"
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