Expands to the PID (process ID number) of the current shell.
Question
Parameter $$ ?
Answer
?
Question
Parameter $$ ?
Answer
Expands to the PID (process ID number) of the current shell.
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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
Summary
status
not learned
measured difficulty
37% [default]
last interval [days]
repetition number in this series
0
memorised on
scheduled repetition
scheduled repetition interval
last repetition or drill
Details
No repetitions
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