Which special shell variable represents the process ID of the currently running shell?

Show Answers

The PID of the last background command ($!)The process ID of the current shell ($$)The name of the shell script ($0)All positional parameters as a single word ($*)None of the above

Explanation

In shell scripting, $$ holds the process ID of the current shell. $! refers to the last background process ID, $0 is the script name, and $* contains all positional parameters.