RBASH(1)                                                              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, EENNVV, or BBAASSHH__EENNVV       +o      specifying command names containing //       +o      specifying a file name containing a // as an argument  to  the  ..              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)