OPTIONS
       All of the single-character shell options documented in the description
       of the set builtin command, including -o, can be used as  options  when
       the  shell  is invoked.  In addition, bash interprets the following op‐
       tions when it is invoked:

       -c        If the -c option is present, then commands are read from  the
                 first non-option argument command_string.  If there are argu‐
                 ments after the command_string, the  first  argument  is  as‐
                 signed  to $0 and any remaining arguments are assigned to the
                 positional parameters.  The assignment to $0 sets the name of
                 the shell, which is used in warning and error messages.
       -i        If the -i option is present, the shell is interactive.
       -l        Make bash act as if it had been invoked as a login shell (see
                 INVOCATION below).
       -r        If the -r option is present,  the  shell  becomes  restricted
                 (see RESTRICTED SHELL below).
       -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 or when reading  input
                 through a pipe.
       -v        Print shell input lines as they are read.
       -x        Print commands and their arguments as they are executed.
       -D        A  list of all double-quoted strings preceded by $ is printed
                 on the standard output.  These are the strings that are  sub‐
                 ject to language translation when the current locale is not C
                 or POSIX.  This implies the -n option; no  commands  will  be
                 executed.
       [-+]O [shopt_option]
                 shopt_option  is  one  of  the  shell options accepted by the
                 shopt  builtin  (see  SHELL  BUILTIN  COMMANDS  below).    If
                 shopt_option is present, -O sets the value of that option; +O
                 unsets it.  If shopt_option is not supplied,  the  names  and
                 values  of the shell options accepted by shopt are printed on
                 the standard output.  If the invocation  option  is  +O,  the
                 output is displayed in a format that may be reused as input.
       --        A  --  signals the end of options and disables further option
                 processing.  Any arguments after the -- are treated as  file‐
                 names and arguments.  An argument of - is equivalent to --.

       Bash  also  interprets  a number of multi-character options.  These op‐
       tions must appear on the command line before the  single-character  op‐
       tions to be recognized.

       --debugger
              Arrange for the debugger profile to be executed before the shell
              starts.  Turns on extended debugging mode (see  the  description
              of the extdebug option to the shopt builtin below).
       --dump-po-strings
              Equivalent  to -D, but the output is in the GNU gettext po (por‐
              table object) file format.
       --dump-strings
              Equivalent to -D.
       --help Display a usage message on standard  output  and  exit  success‐
              fully.
       --init-file file
       --rcfile file
              Execute  commands  from file instead of the system wide initial‐
              ization file /etc/bash.bashrc and the standard personal initial‐
              ization  file ~/.bashrc if the shell is interactive (see INVOCA‐
              TION below).

       --login
              Equivalent to -l.

       --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 /etc/profile or
              any  of  the  personal  initialization  files   ~/.bash_profile,
              ~/.bash_login,  or  ~/.profile.   By  default,  bash reads these
              files when it is invoked as a login shell  (see  INVOCATION  be‐
              low).

       --norc Do  not  read  and  execute  the system wide initialization file
              /etc/bash.bashrc and the personal initialization file  ~/.bashrc
              if  the  shell  is interactive.  This option is on by default if
              the shell is invoked as sh.

       --posix
              Change the behavior of bash where the default operation  differs
              from the POSIX standard to match the standard (posix mode).  See
              SEE ALSO below for a reference to a document  that  details  how
              posix mode affects bash's behavior.

       --restricted
              The shell becomes restricted (see RESTRICTED SHELL below).

       --verbose
              Equivalent to -v.

       --version
              Show  version information for this instance of bash on the stan‐
              dard output and exit successfully.