Unix, with its ideals, has influenced Linux and macOS, with FreeBSD being used on servers.Originally developed in secrecy, Unix revolutionized computing beyond punch card interfaces.Multics, a time-sharing computer project, influenced Unix's development by AT&T engineers.Unix creators, including Ken Thompson and Dennis Ritchie, started Unix after Multics project ended.Thompson's initial project named Unics on a PDP-7 evolved into Unix with the help of the team.Unix development continued on a PDP-11, leading to its first official manual in 1971 and public debut in 1973.AT&T released Unix's source code under license due to legal constraints, leading to the first user groups for support.The creation of the C programming language by Dennis Ritchie at Bell Labs further fueled Unix's development.Today, Unix's legacy can be seen in various programming languages, operating systems, and derivatives like Linux, BSD, and Unix-like systems.