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+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)