RBASH(1)                    General Commands Manual                   RBASH(1)

NAME
       rbash - restricted bash, see bash(1)

RESTRICTED SHELL
       If bash is started with the name rbash, or the -r option is supplied at
       invocation,  the  shell becomes restricted.  A restricted shell is used
       to set up an environment more controlled than the standard  shell.   It
       behaves  identically  to bash with the exception that the following are
       disallowed or not performed:

       o      Changing directories with cd.

       o      Setting or unsetting the values of SHELL, PATH,  HISTFILE,  ENV,
              or BASH_ENV.

       o      Specifying command names containing /.

       o      Specifying  a  filename  containing  a / as an argument to the .
              builtin command.

       o      Using the -p option to the  .   builtin  command  to  specify  a
              search path.

       o      Specifying  a  filename containing a slash as an argument to the
              history builtin command.

       o      Specifying a filename containing a slash as an argument  to  the
              -p option to the hash builtin command.

       o      Importing  function  definitions  from  the shell environment at
              startup.

       o      Parsing the values of BASHOPTS and SHELLOPTS from the shell  en-
              vironment at startup.

       o      Redirecting  output using the >, >|, <>, >&, &>, and >> redirec-
              tion operators.

       o      Using the exec builtin command to replace the shell with another
              command.

       o      Adding or deleting builtin commands with the -f and  -d  options
              to the enable builtin command.

       o      Using  the  enable  builtin  command  to  enable  disabled shell
              builtins.

       o      Specifying the -p option to the command builtin command.

       o      Turning off  restricted  mode  with  set  +r  or  shopt  -u  re-
              stricted_shell.

       These restrictions are enforced after any startup files are read.

       When  a  command  that is found to be a shell script is executed, rbash
       turns off any restrictions in the shell spawned to execute the script.

SEE ALSO
       bash(1)

Bash-5.2                       2021 November 22                       RBASH(1)
