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by chasil
627 days ago
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The dash shell is supposedly four times faster than bash, and dramatically reduced Ubuntu's boot time. The [[ test syntax is not implemented in dash. It is listed as a future reserved word in the POSIX shell standard, but is not (yet?) specified. (Google: POSIX shell) https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V... If you pull the HTML file off the above link, you will get a directory listing of all of the POSIX.2 utilities (tar, sed, awk, etc.). The options that you find in the specifications are maximally portable. |
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