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MacOS: sw_vers

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Joshua Levy 2015-10-08 14:08:10 -07:00
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@ -499,6 +499,8 @@ These are items relevant *only* on MacOS.
- Be aware MacOS is based on BSD Unix, and many commands (for example `ps`, `ls`, `tail`, `awk`, `sed`) have many subtle variations from Linux, which is largely influenced by System V-style Unix and GNU tools. You can often tell the difference by noting a man page has the heading "BSD General Commands Manual." In some cases GNU versions can be installed, too (such as `gawk` and `gsed` for GNU awk and sed). If writing cross-platform Bash scripts, avoid such commands (for example, consider Python or `perl`) or test carefully.
- To get MacOS release information, use `sw_vers`.
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