In Unix, how do I use the sort command?
sort command sorts the contents of a file, in numeric
or alphabetic order, and prints the results to standard output
(usually the terminal screen). The original file is unaffected.
For example, if
filename is a file containing a list of
words, at the Unix prompt, you would enter:
This will print the list to the screen in alphabetical order (numbers first, then capital words, then lowercase words). To eliminate any duplicate entries in the list, use:
sort -u filename
To sort case-insensitively, use:
sort -f filename
To sort case-insensitively and in reverse order, use:
sort -fr filename
As with many Unix commands, you can redirect the output to a new file:
sort filename > newfilename
The output of the
sort command will then be stored in a
newfilename in the current directory.
You can also pipe the output of the
sort command into
other Unix commands, for example:
sort filename | more
This sends the output through the
more command for easy
To print only the first word of each line, enter:
sort filename | cut -f1 -d" "
cut command selects the field specified by the
-f option and distinguishes fields by the
delimiter character specified by the
option, a space in this example.
To view the online manual for the
sort command, at the
Unix prompt, enter:
At Indiana University, for personal or departmental Linux or Unix systems support, see At IU, how do I get support for Linux or Unix?
This is document afjb in the Knowledge Base.
Last modified on 2008-08-22.
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