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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
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Display last exit status of a command

Terminal - Display last exit status of a command
echo $?
2009-05-09 17:32:23
Functions: echo
Display last exit status of a command

The variable ? contain the last exit status of a command, it can be printed for troubleshooting purpose.


There are 9 alternatives - vote for the best!

Terminal - Alternatives

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What others think

? can be really useful in shell scripts too. I've used this in a while loop where I do a "host hostname" command while waiting for a machine to come up. The loop exits when the exit status changes and the script ends by alerting me that the machine is up.
Comment by cards 457 weeks and 6 days ago

Sometimes i don't understand the votes on that site where there are interesting commands that have minus and others which vote numbers is debatable sometimes.

No offence but, to me $? variable belongs to the basics (and actually was in the very first things I was taught about Linux).

Comment by UnixNeko 318 weeks and 5 days ago

Your point of view

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