●●● ●●●● ●●●●● ●●●● ●●●●● Introduction to un/linux ●●●● ●UNⅨ X/Linux are mult- tasking,mut- user Os. UNIX is originated from UNICS and MULTICS, 1969 o time sharing environment UNIX/Linux commands are reusable and compact hierarchical file systems with easy-to-manage file permission scheme In 1991. Linus torvalds. released the first version of Linux kernel on pcs Linux is an open source system it grew to be a powerful and competitive operating system in PCs MACs and even some brand name workstationsIntroduction to UNIX/Linux ⚫ UNIX/Linux are multi-tasking, multi-user OS. ⚫ UNIX is originated from UNICS and MULTICS, 1969. ⚫ time sharing environment ⚫ UNIX/Linux commands are reusable and compact. ⚫ hierarchical file systems with easy-to-manage file permission scheme ⚫ In 1991, Linus Torvalds, released the first version of Linux kernel on PCs. ⚫ Linux is an open source system, it grew to be a powerful and competitive operating system in PCs, MACs and even some brand name workstations