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Question
Parameter $! ?
Answer
Expands to the PID of the command most recently executed in the background.

Question
Parameter $! ?
Answer
?

Question
Parameter $! ?
Answer
Expands to the PID of the command most recently executed in the background.
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BashGuide/Parameters - Greg's Wiki
ositional parameters that are currently set. ? $? Expands to the exit code of the most recently completed foreground command. $ $$ Expands to the PID (process ID number) of the current shell. ! <span>$! Expands to the PID of the command most recently executed in the background. _ "$_" Expands to the last argument of the last command that was executed. And here are a few examples of Variables that the shell provides for you: BASH_VERSION: Contains a string desc

Summary

statusnot learnedmeasured difficulty37% [default]last interval [days]               
repetition number in this series0memorised on               scheduled repetition               
scheduled repetition interval               last repetition or drill

Details

No repetitions


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