Linux expr Command

What is Linux expr Command?#

In this tutorial we learn how to use expr command in Linux. expr command is expr - evaluate expressions.

expr Syntax#

expr EXPRESSION
expr OPTION

expr Examples#

expr Command Manual / Help#

We can use man and info command to see the manual page of expr command. expr command also have --help option to show list of options.

To open man page for expr command we can use command below. To exit man or info page you can press q.

man expr

To open info page for expr command we can use command below.

info expr

To open help page from expr command we can run command below.

expr --help

Linux expr Command Source Code#

You can find expr command source code from the folowing repositories:

• expr source code on GitHub
• expr source code on GNU Savannah cgit
• expr source code on GNU Savannah gitweb

Related Linux Commands#

You can read tutorials of related Linux commands below:

• Linux w Command
• Linux id Command
• Linux who Command

Summary#

In this tutorial we learn how to use expr in Linux with practical examples. Visit our Linux Commands guide to learn more about using command line interface in Linux.