Unix in a Nutshell, 4th Edition

Options

Common options

-c str

Read commands from string str.

-D

Print all $"..." strings in the program. Not ksh88.

-i

Create an interactive shell (prompt for input).

-p

Start up as a privileged user. Bash: don’t read $ENV or $BASH_ENV, don’t import functions from the environment, and ignore the value of $SHELLOPTS. Korn shell: don’t process $HOME/.profile, read /etc/suid_profile instead of $ENV.

-r

Create a restricted shell.

-s

Read commands from standard input. Output from built-in commands goes to file descriptor 1; all other shell output goes to file descriptor 2.

-, --

End option processing.

Bash options

-O option

Enable shopt option option.

--debugger

Read the debugging profile at start-up, turn on the extdebug option to shopt, and enable function tracing. For use by the Bash debugger.

--dump-po-strings

Same as -D, but output in GNU gettext format.

--dump-strings

Same as -D.

--help

Print a usage message and exit successfully.

--init-filefile,--rcfilefile

Use file as the start-up file instead of ~/.bashrc for interactive shells.

--login

Shell is a login shell.

--noediting

Do not use the readline library for input, even in an interactive shell.

--noprofile

Do not read /etc/profile or any of the personal start-up files.

--norc

Do not read ~/.bashrc. Enabled automatically when invoked as sh.

--posix

Turn on POSIX mode.

--restricted

Same as -r.

--verbose

Same as set -v; the shell prints lines as it reads them.

--version

Print a version message and exit.

The remaining options to Bash ...