
Patrick B. answered 02/17/19
Math and computer tutor/teacher
in MS-DOS, it is the AMPERSAND &
EX> CLS & DIR
the double ampersand will execute the second command only if the first was sucessfull
EX> CLS && DIR
On UNIX/Linux it is the semicolon
EX> ls ; whoson
the pipe character | feeds the output of one command into another
EX> ls | sort