rbash(1) - phpMan

RBASH(1)                             General Commands Manual                             RBASH(1)

NAME
       rbash - restricted bash, see bash(1)

RESTRICTED SHELL
       If  bash  is  started with the name rbash, or the -r option is supplied at invocation, the
       shell becomes restricted.  A restricted shell is used to set up an environment  more  con-
       trolled  than  the standard shell.  It behaves identically to bash with the exception that
       the following are disallowed or not performed:

       o      changing directories with cd

       o      setting or unsetting the values of SHELL, PATH, HISTFILE, ENV, or BASH_ENV

       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 history builtin com-
              mand

       o      specifying  a  filename  containing  a slash as an argument to the -p option to the
              hash builtin command

       o      importing function definitions from the shell environment at startup

       o      parsing the value of SHELLOPTS from the shell environment at startup

       o      redirecting output using the >, >|, <>, >&, &>, and >> redirection operators

       o      using the exec builtin command to replace the shell with another command

       o      adding or deleting builtin commands with the  -f  and  -d  options  to  the  enable
              builtin command

       o      using the enable builtin command to enable disabled shell builtins

       o      specifying the -p option to the command builtin command

       o      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, rbash turns off any re-
       strictions in the shell spawned to execute the script.

SEE ALSO
       bash(1)

GNU Bash-4.0                               2004 Apr 20                                   RBASH(1)

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