43 lines
1.6 KiB
Markdown
43 lines
1.6 KiB
Markdown
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# The `cut` command
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The `cut` command lets you remove sections from each line of files. Print selected parts of lines from each FILE to standard output. With no FILE, or when FILE is -, read standard input.
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### Usage and Examples:
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1. Selecting specific fields in a file
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```
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cut -d "delimiter" -f (field number) file.txt
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```
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2. Selecting specific characters:
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```
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cut -c [(k)-(n)/(k),(n)/(n)] filename
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```
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Here, **k** denotes the starting position of the character and **n** denotes the ending position of the character in each line, if _k_ and _n_ are separated by “-” otherwise they are only the position of character in each line from the file taken as an input.
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3. Selecting specific bytes:
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```
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cut -b 1,2,3 filename //select bytes 1,2 and 3
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cut -b 1-4 filename //select bytes 1 through 4
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cut -b 1- filename //select bytes 1 through the end of file
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cut -b -4 filename //select bytes from the beginning till the 4th byte
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```
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**Tabs and backspaces** are treated like as a character of 1 byte.
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### Syntax:
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```
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cut OPTION... [FILE]...
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```
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### Additional Flags and their Functionalities:
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|**Short Flag** |**Long Flag** |**Description** |
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|:---|:---|:---|
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|`-b`|`--bytes=LIST`|select only these bytes|
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|`-c`|`--characters=LIST`|select only these characters|
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|`-d`|`--delimiter=DELIM`|use DELIM instead of TAB for field delimiter|
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|`-f`|`--fields`|select only these fields; also print any line that contains no delimiter character, unless the -s option is specified|
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|`-s`|`--only-delimited`|do not print lines not containing delimiters|
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|`-z`|`--zero-terminated`|line delimiter is NUL, not newline|
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