Contents - Advanced Unix

Mechanics of Getting Started

• Login and Logout
• /etc/inittab
• /etc/gettydefs
• /etc/passwd
• /etc/group
• /etc/profile
• Stty
• Environment
• Closing Arguments
• Questions and Exercises - Getting Started

Details on the Unix File System

• Just a byte in the eternal stream of bits
• Normal Directories
• Tree Structured Hierarchical Directories
• Standard Directories
• Mountable Directories
• File Links and Moves
• Device files
• Pipe Files (Named Pipes)
• Permissions
• Changing Ownership and Permissions
• Using Umask to Alter default Permissions
• Closing Arguments
• Questions and Exercises - File System

Writing Simple Shell Procedures

• What makes it a shell procedure?
• Environment Substitutions
• Passed parameters
• Variable Assignments
• Logic statements - for do done
• Logic statements - case esac
• Logic statements - while do done
• Logic statements - If then else fi and Test
• Logic statements - read
• Capturing command output with backtick and Set
• Looping with While and Expr
• Shell Functions
• Debugging
• Closing Arguments
• Questions And Exercises - Shell Procedures

Outside Your Own Terminal

• PS - Process Status
• KILL - Send Signal to Process
• NOHUP - Start Process with no Hangup
• Scheduling with Cron
• Closing Arguments
• Questions and Exercises - Outside

Management of Disk Resources

• Activities
• Disk Free
• Disk Used
• Disk Used Summary Script
• Why Backup?
• Logical versus Physical Backup
• Tar versus Cpio
• Tar
• Cpio
• Compressed Cpio
• Recovery from Nuked Primary Disk
• Backup/Dump/Restore
• Physical Backups (dd)
• Closing Arguments
• Questions and Exercises - Disk Resources

Terminal Support

• Things all Terminals do alike
• Some Terminal Input codes are different
• Some Terminal Output codes are different
• Some Characteristics are different
• Termcap
• Termcap Sample
• Termcap Capability Names
• Terminfo
• Other Schemes
• What IF they don't match?
• Closing Arguments
• Questions And Exercises - Terminal Support

Print Spooler Management

• Activities
• Spool Interface Scripts
• Banners
• Printer Setup
• Shaking Loose a Stuck Queue
• Grabbing Print Files out of the Queue
• Printing to a remote printer
• Closing Arguments:
• Questions And Exercises - Print Spooler

Overview of Communications

• Characteristics
• Components
• Sample Commands
• File Relationships .
• Systems File
• Devices File
• Dialers File
• Permissions File
• Uucheck Command
• Uutry Command - Normal
• Uutry Command - Errors
• uulog Command
• uustat Command
• Closing Arguments
• Questions And Exercises

Overview of TCP/IP Networking

• Features
• Hardware Model
• /etc/hosts
• Ping(i)
• Telnet(i)
• Routing
• Tracing Routes
• Netstat
• Other Internet Facilities
• Archie
• Gopher
• Mosaic
• Closing Arguments
• Questions And Exercises - TCP/IP internetworking

Overview of Inter-Process Communication

• Shared Memory
• Semaphores
• Messages Queues
• IPC Commands
• Questions And Exercises - IPC

Memory/process organization

• Big Picture
• Kernel
• Processes
• Questions And Exercises - Organization

Physical File Systems

• Disk Geometry
• Partitions
• AIX Volume Groups
• File Systems
• Inodes Glue it together
• Fragmentation
• Fsck - File System Check
• Closing Arguments
• Questions And Exercises - Physical File System

Performance Measuring with Sar

• Identifying Bottlenecks
• Available RAM
• CPU Utilitization
• Buffer Utilization
• Swapping Rates
• Disk Access
• AIX Tuning
• VMSTAT
• Closing Arguments
• Questions And Exercises - Performance Measuring

Procedures.

• Best Laid Plans of Mice & Men