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Operating Systems Commands and Shortcuts
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Shell Varialbles are ?
AnswerClick to flip back
A
TERM,SHELL, MAIL
💡 Explanation:
TERM, SHELL, and MAIL are standard Unix shell environment variables. TERM specifies the terminal type, SHELL indicates the current shell path, and MAIL points to the user's mailbox. While HOME is also a valid shell variable, option A correctly lists three legitimate shell variables. WALL is not a standard environment variable (wall is a broadcasting command).