RBASH(1)RBASH(1)NAMErbash - 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 identi
cally to bash with the exception that the following are
disallowed or not performed:
changing directories with cd
setting or unsetting the values of SHELL, PATH,
ENV, or BASH_ENV
specifying command names containing /
specifying a file name containing a / as an argu
ment to the . builtin command
Specifying a filename containing a slash as an
argument to the -p option to the hash builtin com
mand
importing function definitions from the shell envi
ronment at startup
parsing the value of SHELLOPTS from the shell envi
ronment at startup
redirecting output using the >, >|, <>, >&, &>, and
>> redirection operators
using the exec builtin command to replace the shell
with another command
adding or deleting builtin commands with the -f and
-d options to the enable builtin command
Using the enable builtin command to enable disabled
shell builtins
specifying the -p option to the command builtin
command
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 exe
cuted (see COMMAND EXECUTION above), rbash turns off any
restrictions in the shell spawned to execute the script.
SEE ALSObash(1)GNU 1999 Nov 29 RBASH(1)
