Question
Parameter $$? Answer Expands to the PID (process ID number) of the current shell. Question Parameter$$ ?
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Question
Parameter $$? Answer Expands to the PID (process ID number) of the current shell. If you want to change selection, open document below and click on "Move attachment" BashGuide/Parameters - Greg's Wiki t of them all as individual words. # # Expands to the number of positional parameters that are currently set. ? ? Expands to the exit code of the most recently completed foreground command.  <span>$$ Expands to the PID (process ID number) of the current shell. ! $! Expands to the PID of the command most recently executed in the background. _ "$_" Expands to the last argument of the last command that was executed. And here are a few examples o

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