End of Unit 1
• Questions and Answers
• Summary
• Open source and the right to modify
• The GNU Project and the Free Software Foundation
• Linus Torvalds and the Linux kernel
• Red Hat Enterprise Linux and the Fedora Project
• Basic Linux Principles
End of Unit 2
• Questions and Answers
• Summary
• Login name and password
• startx
• gnome-terminal
• passwd
• su
• nano
End of Unit 3
• Questions and Answers
• Summary
• Running Commands
• Getting Help
End of Unit 4
• Questions and Answers
• Summary
• The Linux filesystem hierarchy
• Command-line file management tools
• The Nautilus file manager
End of Unit 5
• Questions and Answers
• Summary
• All files are owned by one user and one group
• The mode of a file is made up of three permissions: those of the user, the
group and all others
• Three permissions may be granted or denied: read, write and execute
End of Unit 6
• Questions and Answers
• Summary
• Command expansion: $()
• History recall: !string, !num
• Inhibition: '',
End of Unit 7
• Questions and Answers
• Summary
• Standard I/O channels
• File redirection
• Standard input (<)
• Standard Output (>)
• Standard Error (2>)
• Pipes redirect standard output to standard input
• for loops can perform commands on items from a program's standard output
or an explicit list
© 2007 Red Hat, Inc.
All rights reserved
RH033-RHEL5-en-2-20070602
Unit 8 Page 151
End of Unit 8
• Questions and Answers
• Summary
• Extracting Text
• cat, less, head, tail, grep, cut
• Analyzing Text
• wc, sort, uniq, diff, patch
• Manipulating Text
• tr, sed
• Special Search Characters
• ^, $, [abc], [^abc], [[:alpha:]], [^[:alpha:]], etc
End of Unit 9
• Questions and Answers
• Summary
• Use the three primary modes of vi and vim
• Move the cursor and enter Insert mode
• Change, delete, yank, and put text
• Undo changes
• Search a document
• Save and exit
End of Unit 10
• Questions and Answers
• Summary
• system-config-network
• /etc/sysconfig/network-scripts/*
• ifup, ifdown
• lpr sends text to the printer
• date configures date/time from CLI
• system-config-date configures date/time from GUI
• read VAR sets variable from STDIN
• $1, $2, etc map to command-line arguments
• $# represents the number of arguments to a script
End of Unit 11
• Questions and Answers
• Summary
• A process is any set of instructions in memory
• Processes are managed with: ps, kill, top, gnome-system-monitor
• Suspend jobs with Ctrl-z, manage with fg, bg
End of Unit 12
• Questions and Answers
• Summary
• local and environment variables
• command line parsing
• configuring the shell environment
• positional parameters and the read command
End of Unit 13
• Questions and Answers
• Summary
• Use locate to quickly find files that are not new
• Use find to search based on very specific criteria and optionally run
commands on matching files
• Use the Gnome Search Tool for an intuitive, but powerful GUI search tool.
End of Unit 14
• Questions and Answers
• Summary
• Firefox, Evolution and Mutt
• Basic network diagnostic tools
• The importance of secure network clients
End of Unit 15
• Questions and Answers
• Summary
• User information is stored in /etc/passwd
• Group information is stored in /etc/group
• Special Permissions: Sticky Bit, SetUID, SetGID
End of Unit 16
• Questions and Answers
• Summary
• Linux filesystem structure
• Using removable media
• Using unformatted floppies
• Archiving and compression
End of Unit 17
• Questions and Answers
• Summary
• System Installation Process
• Managing Services
• Software Installation Tools
• System Security