Question: How does shell identify whether the user typed command exists or not? O All the user commands are built in shell software and hence it

How does shell identify whether the user typed command exists or not? O All the user commands are built in shell software and hence it knows all the valid commands O Shell asks the kernel to check for valid/invalid command O Shell asks the operating system to check for validinvalid command By searching the directories specified in the PATH variable looking for a ename sa ne as the user specified command na ne and looking at he list con mands b the shell program

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