Linux in a Nutshell, Fifth Edition

144

|

Chapter 3: Linux Commands

This is the Title of the Book, eMatter Edition

Copyright © 2006 O’Reilly & Associates, Inc. All rights reserved.

-S, --ignore-indentation

Normally, etags uses indentation to parse the tag file; this

option tells it to rely on it less.

-V, --version

Print the version number.

ex

ex [options] file

An interactive command-based editor. For more information, see

Chapter 9.

expand

expand [options] [files]

Convert tabs in given files (or standard input, if the file is named -)

to appropriate number of spaces; write results to standard output.

Options

-tabs, -t tabs, --tabs tabs

tabs is a comma-separated list of integers that specify the

placement of tab stops. If exactly one integer is provided, the

tab stops are set to every integer spaces. By default, tab stops

are eight spaces apart. With -t and --tabs, the list may be sepa-

rated by whitespace instead of commas.

-i, --initial

Convert tabs only at the beginning of lines.

--help

Print help message and then exit.

--version

Print version information and then exit.

expr

expr arg1 operator arg2 [ operator arg3 ... ]

Evaluate arguments as expressions and print the results. Argu-

ments and operators must be separated by spaces. In most cases,

an argument is an integer, typed literally or represented by a shell

variable. There are three types of operators: arithmetic, relational,

and logical, as well as keyword expressions. Exit status for expr ...