rbash - restricted bash, see bash(1)
rbash
RBASH(1) General Commands Manual RBASH(1) NAME rbash - restricted bash, see bash(1) SYNOPSIS rbash 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 (see COM- MAND EXECUTION under bash(1)), rbash turns off any restrictions in the shell spawned to execute the script. ATTRIBUTES See attributes(5) for descriptions of the following attributes: +---------------+------------------+ |ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------+------------------+ |Availability | shell/bash | +---------------+------------------+ |Stability | Volatile | +---------------+------------------+ SEE ALSO Bash Reference Manual, Brian Fox and Chet Ramey The Gnu Readline Library, Brian Fox and Chet Ramey The Gnu History Library, Brian Fox and Chet Ramey Portable Operating System Interface (POSIX) Part 2: Shell and Utili- ties, IEEE sh(1), ksh(1), csh(1) emacs(1), vi(1) readline(3) FILES /bin/bash The bash executable /bin/rbash The rbash executable /etc/profile The systemwide initialization file, executed for login shells ~/.bash_profile The personal initialization file, executed for login shells ~/.bashrc The individual per-interactive-shell startup file ~/.bash_logout The individual login shell cleanup file, executed when a login shell exits ~/.inputrc Individual readline initialization file AUTHORS Brian Fox, Free Software Foundation bfox@gnu.org Chet Ramey, Case Western Reserve University chet.ramey@case.edu BUG REPORTS If you find a bug in bash, you should report it. But first, you should make sure that it really is a bug, and that it appears in the latest version of bash. The latest version is always available from ftp://ftp.gnu.org/pub/bash/. Once you have determined that a bug actually exists, use the bashbug command to submit a bug report. If you have a fix, you are encouraged to mail that as well! Suggestions and `philosophical' bug reports may be mailed to bug-bash@gnu.org or posted to the Usenet newsgroup gnu.bash.bug. ALL bug reports should include: The version number of bash The hardware and operating system The compiler used to compile A description of the bug behaviour A short script or `recipe' which exercises the bug Comments and bug reports concerning this manual page should be directed to chet@po.cwru.edu. NOTES This software was built from source available at https://java.net/projects/solaris-userland. The original community source was downloaded from http://ftp.gnu.org/gnu/bash/bash-4.4.tar.gz Further information about this software can be found on the open source community website at http://www.gnu.org/software/bash/. GNU Bash-4.1 2009 December 30 RBASH(1)