_R_B_A_S_H(1)                    General Commands Manual                   _R_B_A_S_H(1)

NNAAMMEE
       rbash - restricted bash, see bbaasshh(1)

RREESSTTRRIICCTTEEDD SSHHEELLLL
       If bbaasshh is started with the name rrbbaasshh, or the --rr 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 bbaasshh with the exception that the following are
       disallowed or not performed:

       +o      changing directories with ccdd

       +o      setting or unsetting the values of SSHHEELLLL, PPAATTHH,  HHIISSTTFFIILLEE,  EENNVV,
              or BBAASSHH__EENNVV

       +o      specifying command names containing //

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

       +o      specifying a filename containing a slash as an argument  to  the
              hhiissttoorryy builtin command

       +o      specifying  a  filename containing a slash as an argument to the
              --pp option to the hhaasshh builtin command

       +o      importing function definitions from  the  shell  environment  at
              startup

       +o      parsing  the  value  of  SSHHEELLLLOOPPTTSS from the shell environment at
              startup

       +o      redirecting output using the >, >|, <>, >&, &>, and >>  redirec-
              tion operators

       +o      using the eexxeecc builtin command to replace the shell with another
              command

       +o      adding  or  deleting builtin commands with the --ff and --dd options
              to the eennaabbllee builtin command

       +o      using the  eennaabbllee  builtin  command  to  enable  disabled  shell
              builtins

       +o      specifying the --pp option to the ccoommmmaanndd builtin command

       +o      turning  off  restricted  mode  with  sseett  ++rr  or  sshhoopptt  --uu rree--
              ssttrriicctteedd__sshheellll.

       These restrictions are enforced after any startup files are read.

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

SSEEEE AALLSSOO
       bash(1)

Bash-5.2                       2021 November 22                       _R_B_A_S_H(1)
