By: Strauss K in macos Tutorials on 2011-02-03
cut is a command-line tool in Mac OS X and other Unix-based operating systems that allows you to extract sections from each line of a file or from piped input. It can be used to select specific columns or fields from a file or to remove certain characters or sections from each line.
The basic syntax of the
cut command is as follows:
cut options filename
options specifies the operation to be performed on the input file, and
filename is the name of the file to be processed. If you don't specify a filename,
cut will read from standard input (i.e., data piped from another command).
Here are some common options you can use with the
--characters: Extracts specific characters or byte ranges from each line.
--fields: Extracts specific fields or columns from a delimited file.
--delimiter: Specifies the delimiter character used in a delimited file.
--only-delimited: Suppresses lines that don't contain the delimiter character.
For example, to extract the first five characters from each line of a file called
file.txt, you can use the following command:
cut -c 1-5 file.txt
This will display the first five characters of each line in
To extract specific fields from a delimited file, you can use the following command:
cut -f 1,3 -d , file.csv
This will display the first and third fields from each line in a comma-separated value (CSV) file called
For more information on how to use
cut and its various options, you can refer to the manual page by running the following command in the Terminal:
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