RBASH(1)                                                              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 controlled 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, ENV, or BASH_ENV

       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
              -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 >> redirect-
              ion 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 restrictions in the shell spawned to execute the script.

SEE ALSO
       bash(1)



GNU Bash-3.0                      2004 Apr 20                         RBASH(1)