Re: Packages - how to make an uninstaller?
Re: Packages - how to make an uninstaller?
- Subject: Re: Packages - how to make an uninstaller?
- From: Stephen Kay <email@hidden>
- Date: Wed, 29 Mar 2017 20:02:10 -0700
- Thread-topic: Packages - how to make an uninstaller?
Most excellent. Thanks!
- Stephen
On 3/29/17 5:22 PM, "Conor Schutzman" <email@hidden> wrote:
>I’d likely point you to Rich Trouton’s blog post that talks about
>script-only packages, which has a huge amount of information that also
>pertains to packages with more than just scripts.
>https://derflounder.wordpress.com/2014/06/01/understanding-payload-free-pa
>ckages/
>
>Variable
>
>What’s Referenced
>$0
>=
>Returns the path to the script
>$1
>=
>Returns the path to the installer package
>$2
>=
>Returns the target location (for example: /Applications)
>$3
>=
>Returns the target volume (for example: /Volumes/Macintosh HD)
>
>
>
>On Mar 29, 2017, at 5:17 PM, Stephen Kay <email@hidden> wrote:
>
>Thanks. Does anyone have a link to a reference/list about installer
>environment variables?
>
>- Stephen
>
>On 3/29/17 12:01 PM, "Conor Schutzman" <email@hidden> wrote:
>
>
>$3 is an environment variable that exists for scripts executed by
>installer, it refers to the installation volume.
>
>For example, if you had multiple partitions, and were booted to
>MacintoshHD, but were installing to a partition named Storage; $3 would
>resolve to “/Volumes/Storage”. In most traditional environments, $3 just
>resolves to “/“, but it’s important to understand it’s use for more
>specialized/exotic configurations.
>
>On Mar 29, 2017, at 11:56 AM, Stephen Kay <email@hidden> wrote:
>
>Ok, thanks - I get it.
>
>So in this example:
>
>## Is Foo installed? ##
>if [[ -d "$3/Applications/Foo.app" ]] ; then
>
>Where is $3 coming from? I understand that $1 $2 $3 etc. are positional
>variables.
>
>Thanks,
>- Stephen
>
>
>On 3/28/17 2:52 PM, "Stephane Sudre" <email@hidden> wrote:
>
>On Tue, Mar 28, 2017 at 11:30 PM, Mike Solin <email@hidden>
>wrote:
>It¹s built-in to the shell. See 'man bash'.
>
>
>
>On Tue, Mar 28, 2017 at 2:28 PM, Stephen Kay <email@hidden> wrote:
>
>Thanks for the example! Excuse my ignorance, but what does '-d'
>command
>do? I've been trying to search for info on this, related to
>shell-scripting, but couldn't find anything.
>
>
>
>To avoid reading more than 10 pages of the bash man pages to find the
>answer:
>
>
>http://stackoverflow.com/questions/59838/check-if-a-directory-exists-in-
>a-
>shell-script
>
>
>
>
>
>
>
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