I'm in the process of planning an upgrade from OS X El Capitan to macOS High Sierra, and I'm using things like Homebrew, Composer, Elasticsearch, and — by extension — Java.

I'm using MAMP Pro with the files stored in: /Library/WebServer/Documents/.

I need to know if these things will remain intact after the upgrade, or whether I have to install them again afterwards?


All the software installed in macOS (along with the ones you mentioned) remain intact between OS upgrades.

However, it is advisable to keep an up-to-date backup before performing the upgrade.

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    I used Time Machine about 30 minutes ago. – Wayne Smallman Aug 11 '18 at 9:53
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    If you are sure you have a working backup, you can go ahead and perform the upgrade. – Nimesh Neema Aug 11 '18 at 9:54
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    @WayneSmallman You may also wish to refer to this answer: apple.stackexchange.com/a/332616/279727 – Nimesh Neema Aug 11 '18 at 9:58
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    I've completed the update without problems. I've also checked with the web applications, which are also working. – Wayne Smallman Aug 11 '18 at 14:14

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