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Top Forums Shell Programming and Scripting Creating a command on a BASH shell Post 302341581 by zaxxon on Thursday 6th of August 2009 07:45:37 AM
Old 08-06-2009
From man bash on my Debian box Smilie
Code:
       [ function ] name () compound-command [redirection]
              This defines a function named name.  The reserved word function is optional.  If the function reserved word is supplied, the parentheses
              are optional.  The body of the function is the compound command compound-command (see Compound Commands above).  That command is usually
              a  list of commands between { and }, but may be any command listed under Compound Commands above.  compound-command is executed whenever
              name is specified as the name of a simple command.  Any redirections (see REDIRECTION below) specified when a function  is  defined  are
              performed  when  the  function is executed.  The exit status of a function definition is zero unless a syntax error occurs or a readonly
              function with the same name already exists.  When executed, the exit status of a function is the exit status of the  last  command  exe-
              cuted in the body.  (See FUNCTIONS below.)

Tbh, I usually write them even without "function" in front of them.
 

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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 controlled than the standard shell. It behaves identically to bash with the exception that the follow- ing 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 filename 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 >> 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 restrictions 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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