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In addition to the single-character shell command-line options
(see section The Set Builtin), there are several multi-character
options that you can use. These options must appear on the command
line before the single-character options to be recognized.
-norc
- Don't read the `~/.bashrc' initialization file in an
interactive shell. This is on by default if the shell is
invoked as
sh.
-rcfile filename
- Execute commands from filename (instead of `~/.bashrc')
in an interactive shell.
-noprofile
- Don't load the system-wide startup file `/etc/profile'
or any of the personal initialization files
`~/.bash_profile', `~/.bash_login', or `~/.profile'
when bash is invoked as a login shell.
-version
- Display the version number of this shell.
-login
- Make this shell act as if it were directly invoked from login.
This is equivalent to `exec - bash' but can be issued from
another shell, such as
csh. If you wanted to replace your
current login shell with a Bash login shell, you would say
`exec bash -login'.
-nobraceexpansion
- Do not perform curly brace expansion (see section Brace Expansion).
-nolineediting
- Do not use the GNU Readline library (see section Command Line Editing)
to read interactive command lines.
-posix
- Change the behavior of Bash where the default operation differs
from the Posix 1003.2 standard to match the standard. This
is intended to make Bash behave as a strict superset of that
standard.
There are several single-character options you can give which are
not available with the set builtin.
-c string
- Read and execute commands from string after processing the
options, then exit.
-i
- Force the shell to run interactively.
-s
- If this flag 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.
An interactive shell is one whose input and output are both
connected to terminals (as determined by isatty()), or one
started with the -i option.
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