Long past the free-tier period on #aws but cmdchallenge still manages to stay well under the free tier limits
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Here is a diagram for how this side-project fits together. read more at jarv.org/posts/does-serverle…
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I think my own special hell would be a shell scripting environment where gnu versions of sed,grep,find,etc were replaced with bsd version randomly
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You can now see stats on correct and incorrect answers thanks to #goatcounter cmdchallenge.goatcounter.com…
A special Christmas edition of cmdchallenge, "12 days of shell" 12days.cmdchallenge.com/ . How does it work as a gentle introduction to the command line?
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Very nice site command-line.online for walking through the basics of command line usage, check it out!
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echo $(<file) is fast, but probably a bit less familiar than just using cat jarv.org/posts/cat-without-c…
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For the oops challenges oops.cmdchallenge.com, some helpful tips on using shell redirection jarv.org/posts/shell-redirec…
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some new challenges today for those who are really feeling adventurous! oops.cmdchallenge.com/
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Of course this is answered in the bash man page:
"If no command name results, redirections are performed, but do not affect the current shell environment. A redirection error causes the command to exit with a non-zero status."
">foo" is an alternative to "touch foo" but it seems like magic when there is nothing on the left side 🤔
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Pushed an update so that solutions can be viewed a bit nicer. cmdchallenge.com/#/last_line… TIL that you can invert `cut` with the --compliment option
TIL the option `-d` to grep for how to treat directories, if you like typing instead of `-r` you can use `-d recursive`
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Shout-out to #OpenMoji for all the nice icons on the cmdchallenge.com re-design
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This solution to deleting files cmdchallenge.com/#/s/delete_… :
$ find . | while read i; do rm -rf $i; done
It surprising to see how many people pipe the output of ls for no reason $ ls | cat, then again I still catch myself doing $ cat ... | grep
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