Better Shell Script Performance in GNU Bash - Avoiding Subshells, grep, sed, and More - Jody Bruchon

First published at 03:56 UTC on March 11th, 2021.

If you're using subshells, grep, sed, and tr inside loops in your shell scripts, you might be able to use some built-in features of GNU Bash to dramatically speed those scripts up. Parameter expansion, globbing, and extended regular expression …

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