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1.document Complete Cut Command

The document provides an overview of the 'cut' command in bash shell scripting, which is used to extract specific parts of each line from a file based on byte, character, or field positions. It includes syntax examples for using the command with various options and delimiters. Additionally, it explains how to automate common tasks using these features.

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Gaurav Kumar
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21 views5 pages

1.document Complete Cut Command

The document provides an overview of the 'cut' command in bash shell scripting, which is used to extract specific parts of each line from a file based on byte, character, or field positions. It includes syntax examples for using the command with various options and delimiters. Additionally, it explains how to automate common tasks using these features.

Uploaded by

Gaurav Kumar
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Bash Shell Scripting

cut command

Learn how to automate common tasks using bash shell scripting


Cut command:
 The 'cut‘ command is a powerful tool to extract parts of each line from a file.
 It is based on
 Byte Position
 Character Position
 Fields based on delimiter (by default delimiter is the tab)
 Cut command syntax:
 cut [options] <positions(fields) /range of positions(fields)> <input_file>
 cat file | cut [options] <positions(fields) /range of positions(fields)>
 Options: -b -c and -f
 Rages:
2 only second byte/character/filed
2- second byte/character/filed to last
-7 first to seven
3,5 third and fifth

Learn how to automate common tasks using bash shell scripting


Cut command for Byte/Character Position:
 To cut out a section of a line by specifying a byte/character position use the -b/-c option.
 Syntax:
 cut -b <position’s/range of position’s> file
 cut -c <position’s/range of position’s> file
 Position’s: 3,5,10
 Range of Position’s: 3-7, 6-10
 Ex: mytext.txt
 cut -b 2 mytext.txt
 cut -b 3,7 mytext.txt
 cut -b 5-9 mytext.txt
 cut -b 5- mytext.txt
 cut -b -7, 9 mytext.txt
 Use --complement to complement the output

Learn how to automate common tasks using bash shell scripting


Cut command for filed Position:
 To cut out a section of a line by specifying a field position use the -f option.
 Assume fields are like columns, by default cut command will separates columns based on
tab(delimiter).
 If we want to use different filed separator use -d (delimiter).
 Syntax:
 cut -f <position’s/range of position’s> file
 cut -f <position’s/range of position’ss> [-d ‘:’] [--output-delimiter=‘**’] file
 -d is a delimiter like @ , : / etc….
 Position’s: 3,5,2
 Range of Position’s: 3-7, 6-10
 Ex: mytext.txt
 cut -f 2 mytext.txt
Use -s option with –f to Ignore the line that do not contain a delimiter
 cut -f 3,7 mytext.txt
 cut -f 5-9 mytext.txt
 cut -f 5- mytext.txt
 cut -f -7, 9 --output-delimiter=“ “ mytext.txt

Learn how to automate common tasks using bash shell scripting

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