Each of the following is in the 1000 hours saved club (in no particular order):
jq, perl, grep, gnu textutils, gnu parallel, bash, xargs, gkrellm, nload.
Make deserves a special shout out. If you think it's only useful for building software, you've completely missed the point (similarly, if you think some language-specific tool is superior, you're doing things completely wrong):
Anyway, this document saved me at least 10,000 hours:
https://www.gnu.org/software/make/manual/html_node/index.htm...
Other peoples' python has the distinction of being the only software in my -1000 hours saved category. (And if you consider maintaining code written in the above "write only" languages, you'll realize how big of a feat that is!)
jq, perl, grep, gnu textutils, gnu parallel, bash, xargs, gkrellm, nload.
Make deserves a special shout out. If you think it's only useful for building software, you've completely missed the point (similarly, if you think some language-specific tool is superior, you're doing things completely wrong):
Anyway, this document saved me at least 10,000 hours:
https://www.gnu.org/software/make/manual/html_node/index.htm...
Other peoples' python has the distinction of being the only software in my -1000 hours saved category. (And if you consider maintaining code written in the above "write only" languages, you'll realize how big of a feat that is!)