1. UNIX Introduction History Main Features UNIX Operating System
Basic Commands
UNIX File System
TCP/IP and Networking
UNIX Shell
Shell Script Programming

2. History Written by K. Thompson and D. Ritchie Developed at Bell Lab
Derived from Multics(1969)
Two Flavors
System V
BSD
Recent Development
MOTIF, X, Open View

3. Main Features Multi-user Multi-tasking
foreground, background
Hierarchical Directory Structure
Portability
less than 10% in assembly

4. UNIX Operating System Kernel Shell Utility
scheduling, file management, hardware access, security
Shell
user prompt, interpret commands, execute user commands, customer environment
sh, csh, tcsh
Utility
rm, cat, ls, mkdir, rmdir, kill, ps

5. Basic Commands Command Structure Locating a Command
command, option switch, argument
ls -l /etc
Locating a Command
Stdin, Stdout, and Stderr
Redirection: >, <, >>
Connecting Commands: |

6. UNIX File System Types of file Structure of the File System
direcroties, files, special files, pipes
Structure of the File System
link, inode
Home Directory
Current Directory
Pathname
Access Permissions

7. UNIX System Directories
/(root)
kernel
/bin
/dev
/tmp
/etc
/var
/usr
/home

8. TCP/IP and Networking IP TCP Address Subnet
Fragmentation and Reassembly
Routing
Error Reporting
TCP
Connection Establish and Close
Flow and Error Control

9. TCP/IP and Networking Address Resolution Protocol (ARP) RAPR
Domain Name System (DNS)
Internet Super Server: Inetd

10. Networking Commands
arp
ping
traceroute
route
netstat
tcpdump

11. Networking Files /etc/hosts /etc/resolv.conf /etc/services
/etc/inetd.conf

12. Network Applications
mail
telnet
ftp
archie
www
news

13. UNIX Shell

14. Shell Script Programming