InstaDMG Variables

[imonkey]

Hi All,
I’m interesting in finding out more about how InstaDMG uses variables, or more precisely, how scripts that get invoked by InstaDMG use variables.
For example, good old $3—from what I have read this is the “current start-up drive” good for using install paths.

So my questions are:

1. How is this variable set? I’ve looked all though the instadmg.bash file and can’t seem to find how it is set.
2. If there’s $3 then surely there must be $1, $2 and maybe $4, etc. What are these used for if any?
3. Are these variables only used by InstaDMG? I’ve heard the loginwindow can use $1 and the current user.

Excuse the newby question and thanks in advance for any insight.

[Allister Banks]

Hey there,

This is BASH, right, not something InstaDMG-specific.
According to the guide, variables set to a built-in position, like $3, may be referred to as positional parameters:
[url]http://tldp.org/LDP/abs/html/othertypesv.html[/url]

Let us know if there’s something you’re trying to accomplish that you need info on, look in the postflight for createUser if you’d like another BASH scripting example.

Allister

[Author]

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