[lug] selinux

[Lee Woodworth]

On 02/21/2018 05:38 PM, BC wrote:
> 
> I'm converting a [bash] shell script to golang in an effort to learn to program in Go.  
> I'm having lots of success but this script statement has me confused:
> 
> 
>      _value="$(__get_jail_prop $_property default)"
> 
> 
> The puzzling word is 'default'.  __get_jail_prop is a function to which is passed the 
> parameter $_property (defined elsewhere).  The function returns _value.
> 
> But what does the word 'default' do?  I tried passing the word "default" to the 
> Go-equivalent function and the program bombs.  So I don't think it is a parameter to be 
> passed.

I don't recall the string 'default' being special to the shell in an
argument list. It looks to me like a second argument to the command/function.

info bash usually has all the gory details

What could happen is that since _property is not quoted, when it is empty then
the command expansion is equivalent to:
   "$(__get_jail_prop default)"