Fearing misuse, some system administrators only allowed users in a certain group to use su; this group was frequently referred to as "wheel", which indicated a level of trust greater than that of a system operator.
Fearing misuse, some system administrators only allowed users in a certain group to use su; this group was frequently referred to as "wheel". The term "wheel" originated with early mainframe and minicomputer systems used in the 1960s and 1970s and indicated a level of trust greater than that of a system operator.