System Administration 1 Introduction to System Administration 6142021

What is a system administrator? System Admin Tasks and Duties: u install systems (including

Other Duties u create accounts (add/delete), passwords, account management u job scheduling u security

Some More Duties u documentation and testing u communication and help (with user community

Almost The Last Duties u disk space management (formatting, partitions, quotas) u writing/modifying scripts

Last Duties Training (others and oneself) u Fixing Bugs u Automate Tasks u Maintain

History System Administration: u 1940 s - today: supercomputer, mainframes, minis, micros, pda u

NT - Microsoft, Proprietary. New Technology. u Clients: Dos-->Windows 3. 1 --> Windows 95

Historical Timeline: (http: //www. worldowindows. com/wintime. html ) u 1975 - Microsoft Formed u

1995 - Windows NT 3. 5. 1 released - Windows 95 released 1996 -

Unix Early 70 s --> AT&T System V Unix (and C developed)--> BSD Unix

Unix u 1982 - Sun Microsystems founded. u PC Based Unix - solaris, SCO

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System Administration 1 -Introduction to System Administration 6/14/2021 1

What is a system administrator? System Admin Tasks and Duties: u install systems (including clients/servers): hardware, software and o. s. u upgrade systems: hardware, software and o. s. u backups u start/stop system (reboot) 6/14/2021 2

Other Duties u create accounts (add/delete), passwords, account management u job scheduling u security u performance monitoring and tuning 6/14/2021 3

Some More Duties u documentation and testing u communication and help (with user community and internal) u networking (client/server) u handling printers, tape drives, modems, disks, UPS, and other peripherals u Memory Management 6/14/2021 4

Almost The Last Duties u disk space management (formatting, partitions, quotas) u writing/modifying scripts (perl, shell, C, etc. . ) u running specialized services/servers (email server, web server, DNS etc. . ) u problem resolution 6/14/2021 5

Last Duties Training (others and oneself) u Fixing Bugs u Automate Tasks u Maintain system files u Analysis of logs/systems, collect stats, reports u Planning and Recommendations u Work with vendors, customers u Research New Technologies u 6/14/2021 6

History System Administration: u 1940 s - today: supercomputer, mainframes, minis, micros, pda u 1980 -1990 s: networks, client/server, "system administrator" "network administrator" (vs. programmers/operators) u 2000 and beyond - hot area of computing 6/14/2021 7

NT - Microsoft, Proprietary. New Technology. u Clients: Dos-->Windows 3. 1 --> Windows 95 --> Windows 98 --> Windows 2000 --> Windows XP u Servers: Windows NT --> Windows 2000 (aka NT 5. 0) --> Windows 2003 (aka NT 6. 0) 6/14/2021 8

Historical Timeline: (http: //www. worldowindows. com/wintime. html ) u 1975 - Microsoft Formed u 1980 - Xenix released by Microsoft u 1981 - MS-DOS 1. 0 released with new IBM PC u 1985 - Windows 1. 0 released u 1992 - Windows 3. 1 released u 1993 - Windows NT 3. 1 released (over 6 million lines of code) u 6/14/2021 9

1995 - Windows NT 3. 5. 1 released - Windows 95 released 1996 - Windows NT 4. 0 released 1998 - Windows 98 released 1998 - Microsoft announces Windows NT 5. 0 will be renamed Windows 2000 - release of windows 2000 (aka NT 5. 0) 2001 - release of windows XP (aka NT 5. 1) 2003 - release of windows 2003 server 6/14/2021 10

Unix Early 70 s --> AT&T System V Unix (and C developed)--> BSD Unix (U. Cal-Berkley) u Today - many variants. Portable and Scalable. HP - HP/UX IBM - AIX Silicon Graphics - Irix Sun Microsystems - Sun. OS/Solaris u For history see: http: //www. sun. com/aboutsun/coinfo/hist ory. html u 6/14/2021 11

Unix u 1982 - Sun Microsystems founded. u PC Based Unix - solaris, SCO Unix, Free. BSD, Net. BSD u Linux - Linus Torvalds (Finland) 1991. Free/Open. – (Red Hat Linux – Commercial Version) – Debian, another popular version of Linux (freeware) 6/14/2021 12

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