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The purpose of special argument -, which is supported by most utilities, is to signal that subsequent arguments should be treated as operands (values), even if they look like options due to starting with -, as Jacob C. Similar to the bash solution, s/././ performs text substitution, but - unlike in bash - true regular expressions are used.Here's the equivalent of the command at the top using rename: rename -n -e 's/_.*_/_/' *.pngĪgain, this command performs a dry run remove -n to perform actual renaming. On macOS you can install it using popular package manager Homebrew as follows: brew install rename If you find yourself batch-renaming files frequently, consider installing a specialized tool such as the Perl-based rename utility. Note that _*_ is a pattern (a wildcard expression, as also used for globbing), not a regular expression (to learn about patterns, run man bash and search for Pattern Matching).

Like changing the name to your Macbook, if you need to rename your iMac, Mac Mini, Macbook Pro, Macbook Air, Mac Pro, or iMac Pro the steps listed above will work for all Apple computers.In your specific case you can use the following bash command ( bash is the default shell on macOS): for f in *.png do echo mv "$f" "$" is an application of bash parameter expansion: the (first) substring matching pattern _*_ is replaced with literal _, effectively cutting the middle token from the name. AirDrop – You may want to be able to accept files via AirDrop but don’t want your name publicly available to anyone looking.Setting Limits on Kids Devices – If you’re trying to limit how much time a Macbook can access the internet, this can make it easy to identify your child’s Macbook and set rules on your router.This helps make it easier than a random Mac Address. Home Network Identification – Sometimes you want to know which devices are on your home network.MacOS adds a number to the end of a computer name if another computer on the network already has that name Network wide conflicts – If you work at a place with a lot of “Brians” and you don’t want your computer to be named “Brian’s Macbook (25)”.