Success: getenv('HOME',V). (gives V="/home/username"). getenv("SHELL",V). (gives V="/bin/csh"). getenv('TERM',V). (gives V="sun-cmd"). getenv('USER',V). (gives V="username"). Fail: getenv('TERM',"vt100"). Error: getenv(TERM,V). (Error 4). getenv('TERM',atom). (Error 5). getenv(1,V). (Error 5).