From 772f20abb0a3a0979c440114bf3a1cff5b3cef03 Mon Sep 17 00:00:00 2001 From: cvpcs Date: Wed, 2 Jun 2010 11:02:31 -0500 Subject: initial import of bash 4.1 --- RBASH | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 RBASH (limited to 'RBASH') diff --git a/RBASH b/RBASH new file mode 100644 index 0000000..0e5c10b --- /dev/null +++ b/RBASH @@ -0,0 +1,49 @@ +6.10 The Restricted Shell +========================= + +If Bash is started with the name `rbash', or the `--restricted' or `-r' +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. A restricted shell behaves identically to `bash' +with the exception that the following are disallowed or not performed: + + * Changing directories with the `cd' builtin. + + * Setting or unsetting the values of the `SHELL', `PATH', `ENV', or + `BASH_ENV' variables. + + * Specifying command names containing slashes. + + * Specifying a filename containing a slash as an argument to the `.' + builtin command. + + * Specifying a filename containing a slash as an argument to the `-p' + option to the `hash' builtin command. + + * Importing function definitions from the shell environment at + startup. + + * Parsing the value of `SHELLOPTS' from the shell environment at + startup. + + * Redirecting output using the `>', `>|', `<>', `>&', `&>', and `>>' + redirection operators. + + * Using the `exec' builtin to replace the shell with another command. + + * Adding or deleting builtin commands with the `-f' and `-d' options + to the `enable' builtin. + + * Using the `enable' builtin command to enable disabled shell + builtins. + + * Specifying the `-p' option to the `command' builtin. + + * Turning off restricted mode with `set +r' or `set +o restricted'. + +These restrictions are enforced after any startup files are read. + +When a command that is found to be a shell script is executed (*note +Shell Scripts::), `rbash' turns off any restrictions in the shell +spawned to execute the script. + -- cgit v1.1