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+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)