Environment Question: Which variable contains current shell process id: a) $* b) $? c) $$ d) $! Linux Environment Interview QuestionAnswer: c) $$ Previous QuestionNext QuestionWhile executing a command, the shell: a) Executes it in the same process (as shell) b) Creates a child shell to execute it c) Loads a special program to take care of the execution d) None of the aboveWhich command is used to debug a shell script program: a) set b) set -x c) debug d) db