RBASH(1)                    General Commands Manual                   RBASH(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 >> redirect-
              ion 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 sseett ++oo rreessttrriicctteedd.

       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)



GNU Bash-4.0                      2004 Apr 20                         RBASH(1)
