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Unix and Linux: Visual Quickstart Guide, Fifth Edition

Name: Unix and Linux: Visual Quickstart Guide, Fifth Edition
ISBN: 9780133793871

by Eric J. Ray, Deborah S. Ray

July 2014

Beginner

408 pages

9h 52m

English

Peachpit Press

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Title Page
Copyright Page
Dedication
Acknowledgments
Table of Contents
Introduction
How Do You Use This Book?Who Are You?What Do You Need Computer-Wise?What Do You Need to Know to Get Started?Anything Else You Should Know?
1. Getting Started with Unix and Linux
Accessing a Unix SystemConnecting to the Unix or Linux SystemLogging InChanging Your Password with passwdListing Directories and Files with lsChanging Directories with cdFinding Yourself with pwdPiping Input and OutputRedirecting OutputUsing WildcardsViewing File Contents with moreDisplaying File Contents with catExploring the SystemGetting Help with manLogging Out
2. Using Directories and Files
Creating Directories with mkdirCreating Files with touchCopying Directories and Files with cpListing Directories and Files with ls (More Goodies)Moving Files with mvRemoving Files with rmRemoving Directories with rmdirFinding Forgotten Files with findLocating Lost Files with locateLinking with ln (Hard Links)Linking with ln -s (Soft Links)
3. Working with Your Shell
Discovering Which Shell You’re UsingUnderstanding Shells and OptionsChanging Your Shell with chshChanging Your Shell TemporarilyUsing Completion in the bash ShellViewing Session History in the bash ShellUsing Completion in the zsh ShellViewing Session History in the zsh ShellChanging Your Identity with suFixing Terminal Settings with sttyExiting the Shell
4. Creating and Editing Files
Choosing an Editor: nano/pico or vi/vimStarting nano and Dabbling with ItSaving in nanoCutting and Pasting Text Blocks in nanoChecking Spelling in nanoGetting Help in nanoExiting nanoStarting vi (or vim) and Dabbling with ItSaving in viAdding and Deleting Text in viImporting Files into viSearching and Replacing in viExiting vi

5. Controlling Ownership and Permissions
Understanding File Ownership and PermissionsFinding Out Who Owns WhatFinding Out Which Group You’re InChanging the Group Association of Files and Directories with chgrpChanging Ownership of Files and Directories with chownChanging Permissions with chmodTranslating Mnemonic Permissions to Numeric PermissionsChanging Permission Defaults with umask
6. Manipulating Files
Counting Files and Their Contents with wcViewing File Beginnings with headViewing File Endings with tailFinding Text with grepUsing Regular Expressions with grepUsing Other Examples of Regular ExpressionsMaking Global Changes with sedChanging Files with awkComparing Files with cmpFinding Differences in Files with diffFinding Differences in Files with sdiffSorting Files with sortEliminating Duplicates with uniqRedirecting to Multiple Locations with teeChanging with trFormatting with fmtSplitting Files with split
7. Getting Information About the System
Getting System Information with unameViewing File Systems with dfDetermining Disk Usage with duFinding Out File Types with fileFinding Out About Users with fingerLearning Who Else Is Logged In with whoLearning Who Else Is Logged In with wGetting Information About Your Userid with id
8. Configuring Your Unix or Linux Environment
Understanding Your Unix or Linux EnvironmentDiscovering Your Current EnvironmentAdding or Changing VariablesLooking at Your zsh Configuration FilesAdding to Your zsh PathChanging Your zsh PromptLooking at Your bash Configuration FilesAdding to Your bash PathChanging Your bash PromptSetting Aliases with alias
9. Running Scripts and Programs
Running a CommandScheduling Onetime Jobs with atScheduling Regularly Occurring Jobs with cronSuspending JobsChecking Job Status with jobsRunning Jobs in the Background with bgRunning Jobs in the Foreground with fgControlling Job Priority with niceTiming Jobs with timeFinding Out What Processes Are Running with psDeleting Processes with kill
10. Writing Basic Scripts
Creating a Shell ScriptRunning a Shell ScriptMaking a Script ExecutableGetting a Head Start on Scripts with historyEmbedding CommandsLooping Your ScriptsCreating If-Then StatementsAccepting Command-Line Arguments in Your ScriptsAccepting Input While a Script Is RunningDebugging Scripts
11. Sending and Reading Email
Choosing an Email Program and Getting StartedReading Email with alpineSending Email with alpineCustomizing alpineReading Email with muttSending Email with muttReading Email with mailSending Email with mailCreating a Signature FileAutomatically Forwarding Incoming MessagesAnnouncing an Absence with vacationConfiguring procmailManaging Email with procmail
12. Accessing the Internet
Getting Familiar with Internet LingoLogging In to Remote Systems with sshLogging In to Remote Systems with telnetCommunicating with Others Using writeCommunicating with Others Using talkGetting Files from the Internet with ftpSharing Files on the Internet with ftpSurfing the Web with linksSurfing the Web with lynxDownloading Websites with wgetChecking Connections with pingTracing Connections with tracerouteMatching Domain Names with IP Addresses
13. Working with Encoded and Compressed Files
Encoding Files with uuencodeDecoding Files with uudecodeArchiving with tarUnarchiving Files with tarCompressing Files with compressUncompressing Files with uncompressZipping a File or Directory with gzipUnzipping a gzip File with gunzipZipping Files and Directories with zipUnzipping Zipped Files with unzipCombining Commands
14. Using Handy Utilities
Calendaring with calCalculating with bcEvaluating Expressions with exprConverting with unitsLooking It Up with lookKeeping a Record of Your Session with scriptGetting Back to Your Place with screenActing On Found Files with xargs
15. Being Root
Acting Like root with sudoBecoming root with suStarting, Stopping, and Restarting DaemonsChanging the System ConfigurationMonitoring the SystemKeeping Up with watchChecking Boot Messages with dmesgSetting the Date and Time
16. Sensational Unix Tricks
Cleaning Up HTML Documents with tidySearching and Replacing Throughout Multiple Documents with sedGenerating Reports with awkUsing Input to Customize Your EnvironmentUsing ROT13 Encoding with sedEmbedding ROT13 Encoding in a Shell ScriptMaking Backups with rsyncUsing Advanced Redirection with stderr
A. Unix and Linux Reference
B. What’s What and What’s Where
C. Commands, Flags, and Arguments
Index

Content preview from Unix and Linux: Visual Quickstart Guide, Fifth Edition

5. Controlling Ownership and Permissions

In This Chapter

Understanding File Ownership and Permissions

Finding Out Who Owns What

Finding Out Which Group You’re In

Changing the Group Association of Files and Directories with chgrp

Changing Ownership of Files and Directories with chown

Changing Permissions with chmod

Translating Mnemonic Permissions to Numeric Permissions

Changing Permission Defaults with umask

Unix, Linux, and Unix-like operating systems are multiuser systems in which your files are separate from Jane’s files, which are separate from Joe’s files, and so on. Any file you create is separate from other users’ files and usually cannot be directly accessed by Jane, Joe, or any other user. The file permissions determine what you can ...

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Unix and Linux: Visual QuickStart Guide, Fourth Edition

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Unix and Linux: Visual Quickstart Guide, Fifth Edition

by Eric J. Ray, Deborah S. Ray

5. Controlling Ownership and Permissions

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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