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OPTIONS

In addition to the single-character shell options documented in the description of the set builtin command, bash interprets the following options when it is invoked:

.BI -c "\| string\^"

If the -c option is present, then commands are read from .IR string . If there are arguments after the .IR string , they are assigned to the positional parameters, starting with .BR $0 .

-r

If the -r option is present, the shell becomes restricted (see .SM "RESTRICTED SHELL" below).

-i

If the -i option is present, the shell is .IR interactive .

-s

If the -s option is present, or if no arguments remain after option processing, then commands are read from the standard input. This option allows the positional parameters to be set when invoking an interactive shell.

-D

A list of all double-quoted strings preceded by $\fP is printed on the standard ouput. These are the strings that are subject to language translation when the current locale is not C or POSIX. This implies the -n\fP option; no commands will be executed.

--

A -- signals the end of options and disables further option processing. Any arguments after the -- are treated as filenames and arguments. An argument of - is equivalent to --\fP.

Bash also interprets a number of multi-character options. These options must appear on the command line before the single-character options in order for them to be recognized.

--dump-po-strings

Equivalent to -D\fP, but the output is in the GNU gettext\fP po\fP (portable object) file format.

--dump-strings

Equivalent to -D\fP.

--help

Display a usage message on standard output and exit successfully.

--login

Make bash act as if it had been invoked as a login shell (see .SM INVOCATION below).

--noediting

Do not use the GNU readline library to read command lines when the shell is interactive.

--noprofile

Do not read either the system-wide startup file .FN /etc/profile or any of the personal initialization files .IR ~/.bash_profile , .IR ~/.bash_login , or .IR ~/.profile . By default, bash reads these files when it is invoked as a login shell (see .SM INVOCATION below).

--norc

Do not read and execute the personal initialization file ~/.bashrc if the shell is interactive. This option is on by default if the shell is invoked as .BR sh .

--posix

Change the behavior of bash\fP where the default operation differs from the POSIX 1003.2 standard to match the standard.

--rcfile\fP file\fP

Execute commands from file instead of the standard personal initialization file ~/.bashrc if the shell is interactive (see .SM INVOCATION below).

--restricted

The shell becomes restricted (see .SM "RESTRICTED SHELL" below).

--rpm-requires

Produce the list of files that are required for the shell script to run. This implies '-n' and is subject to the same limitations as compile time error checking checking; Backticks, [] tests, and evals are not parsed so some dependencies may be missed. --verbose Equivalent to -v\fP.

--version

Show version information for this instance of bash on the standard output and exit successfully.

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