Home > Store

CompTIA Linux+ Portable Command Guide: All the commands for the CompTIA XK0-004 exam in one compact, portable resource, 2nd Edition

Register your product to gain access to bonus material or receive a coupon.

CompTIA Linux+ Portable Command Guide: All the commands for the CompTIA XK0-004 exam in one compact, portable resource, 2nd Edition

Best Value Purchase

Book + eBook Bundle

  • Your Price: $36.32
  • List Price: $58.78
  • Includes EPUB and PDF
  • About eBook Formats
  • This eBook includes the following formats, accessible from your Account page after purchase:

    ePub EPUB The open industry format known for its reflowable content and usability on supported mobile devices.

    Adobe Reader PDF The popular standard, used most often with the free Acrobat® Reader® software.

    This eBook requires no passwords or activation to read. We customize your eBook by discreetly watermarking it with your name, making it uniquely yours.

More Purchase Options

Book

  • Your Price: $27.99
  • List Price: $34.99
  • Usually ships in 24 hours.

eBook (Watermarked)

  • Your Price: $19.03
  • List Price: $23.79
  • Includes EPUB and PDF
  • About eBook Formats
  • This eBook includes the following formats, accessible from your Account page after purchase:

    ePub EPUB The open industry format known for its reflowable content and usability on supported mobile devices.

    Adobe Reader PDF The popular standard, used most often with the free Acrobat® Reader® software.

    This eBook requires no passwords or activation to read. We customize your eBook by discreetly watermarking it with your name, making it uniquely yours.

About

Features

  • Summarizes all commands, keywords, command arguments, and associated prompts
  • Presents configuration examples to show exactly how these commands are used
  • The perfect take-anywhere single-source resource for both exam study and day-to-day Linux administration: no need for thick books or even Web access!

Description

  • Copyright 2020
  • Dimensions: 6" x 9"
  • Pages: 416
  • Edition: 2nd
  • Book
  • ISBN-10: 0-13-559184-8
  • ISBN-13: 978-0-13-559184-0

For each exam objective, the key commands and configuration files will be detailed. The CompTIA Linux+ Portable Command Guide provides a single point of reference while studying for the certification exams as well as a valuable resource after the candidate has successfully passed the exams.

The guide summarizes all commands, keywords, command arguments, and associated prompts. Configuration examples are provided throughout the book to give a better understanding of how these commands are used. This guide is not meant to replace any existing learning materials but rather serve as a supplementary guide to assist readers in the proper use of the many different commands to use on a regular basis and that are required to successfully pass the exams.

Sample Content

Online Sample Chapter

File and directory permissions

Sample Pages

Download the sample pages (includes Chapter 15)

Table of Contents

Introduction xxx

Part I: Hardware and System Confi guration
CHAPTER 1 Explain Linux boot process concepts 1
Boot Loaders 1
Boot Options 3
File Locations 6
Boot Modules and Files 7
Kernel Panic 9
CHAPTER 2 Given a scenario, install, confi gure, and monitor kernel
modules 11
Commands 11
Files 15
CHAPTER 3 Given a scenario, confi gure and verify network connection parameters 17
Diagnostic Tools 18
Configuration Files 28
Bonding 34
CHAPTER 4 Given a scenario, manage storage in a Linux environment 37
Basic Partitions 38
Filesystem Hierarchy 40
Device Mapper 41
Tools 44
Location 54
Filesystem Types 58
CHAPTER 5 Compare and contrast cloud and virtualization concepts and technologies 59
Templates 60
Bootstrapping 62
Storage 63
Network Considerations 65
Types of Hypervisors 66
Tools 67
CHAPTER 6 Given a scenario, confi gure localization options 69
File Locations 70
Commands 70
Environment Variables 73
Character Sets 75
UTF-8 75

Part II: Systems Operation and Maintenance
CHAPTER 7 Given a scenario, conduct software installations, confi gurations, updates, and removals 77
Package Types 78
Installation Tools 78
Build Tools 86
Repositories 88
Acquisition Commands 89
CHAPTER 8 Given a scenario, manage users and groups 93
Creation 94
Modification 94
Deletion 96
Queries 96
Quotas 98
Profiles 102
Important Files and File Contents 106
CHAPTER 9 Given a scenario, create, modify, and redirect fi les 109
Text Editors 110
File Readers 114
Output Redirection 117
Text Processing 123
File and Directory Operations 129
Bonus: regex 141
CHAPTER 10 Given a scenario, manage services 143
Systemd Management 144
Systemd-analyze blame 148
Unit Files 148
SysVinit 152
CHAPTER 11 Summarize and explain server roles 157
NTP 158
SSH 158
Web 159
Certificate Authority 159
Name Server 159
DHCP 160
CHAPTER 12 Given a scenario, automate and schedule jobs 165
cron 165
at 165
crontab 167
fg 170
bg 171
& 171
kill 171
Ctrl-c 172
Ctrl-z 172
nohup 172
CHAPTER 13 Explain the use and operation of Linux devices 173
Types of Devices 174
Monitoring and Configuration Tools 176
File Locations 182
Hot Pluggable Devices 185
CHAPTER 14 Compare and Contrast Linux Graphical User Interfaces 187
Servers 187
GUI 188
Remote Desktop 189
Accessibility 192

Part III: Security
CHAPTER 15 Given a scenario, apply or acquire the appropriate user and/or group permissions and ownership 193
File and Directory Permissions 194
Context-Based Permissions 203
Privilege Escalation 209
User Types 211
CHAPTER 16 Given a scenario, confi gure and implement appropriate access and authentication methods 213
PAM 214
SSH 221
TTYs 228
PTYs 230
PKI 230
VPN as a Client 231
SSL/TLS 232
Transport Mode 232
Tunnel Mode 232
IPSec 232
DTLS 233
CHAPTER 17 Summarize security best practices in a Linux environment 235
Boot Security 236
Additional Authentication Methods 237
Multifactor Authentication 237
Importance of Disabling Root Login via SSH 239
Password-Less Login 239
Chroot Jail Services 240
No Shared IDs 240
Importance of Denying Hosts 240
Separation of OS Data from Application Data 241
Change Default Ports 241
Importance of Disabling or Uninstalling Unused and Unsecure Services 242
Importance of Enabling SSL/TLS 243
Importance of Enabling auditd 243
CVE Monitoring 243
Discouraging Use of USB Devices 243
Disk Encryption 244
Restrict cron Access 244
Disable Ctrl-Alt-Del 244
Add Banner 245
MOTD 245
CHAPTER 18 Given a scenario, implement logging services 247
Key File Locations 247
Log Management 249
CHAPTER 19 Given a scenario, implement and confi gure Linux fi rewalls 257
Access Control Lists 258
Technologies 259
IP Forwarding 263
Dynamic Rule Sets 263
Common Application 265
CHAPTER 20 Given a scenario, backup, restore, and compress fi les 267
Archive and Restore Utilities 268
Compression 269
Backup Types 272
Off-Site/Off-System Storage 274
Integrity Checks 275

Part IV: Linux Troubleshooting and Diagnostics
CHAPTER 21 Given a scenario, analyze system properties and remediate accordingly 277
Network Monitoring and Configuration 278
Storage Monitoring and Configuration 287
CPU Monitoring and Configuration 289
Memory Monitoring and Configuration 292
Lost Root Password 295
CHAPTER 22 Given a scenario, analyze system processes in order to optimize performance 297
Process Management 297
Process States 297
Priorities 298
Kill Signals 299
Commands 300
PIDs 305
CHAPTER 23 Given a scenario, analyze and troubleshoot user issues 307
Permissions 307
Access 309
Authentication 309
File Creation 310
Insufficient Privileges for Authorization 312
Environment and Shell Issues 312
CHAPTER 24 Given a scenario, analyze and troubleshoot application and hardware issues 313
SELinux Context Violations 314
Storage 314
Firewall 317
Permission 318
Service Accounts 319
Group Memberships 319
Dependencies 319
Troubleshooting Additional Hardware Issues 320

Part V: Automation and Scripting
CHAPTER 25 Given a scenario, deploy and execute basic BASH scripts 327
Shell Environments and Shell Variables 328
#!/ bin/bash 332
Sourcing Scripts 332
Directory and File Permissions 333
Extensions 333
Commenting 333
File Globbing 334
Shell Expansions 334
Redirection and Piping 336
Exit Codes 336
Metacharacters 336
Positional Parameters 337
Looping Constructs 337
Conditional Statements 338
Escaping Characters 340
CHAPTER 26 Given a scenario, carry out version control using Git 343
Arguments 343
Files 349
CHAPTER 27 Summarize orchestration processes and concepts 351
Agent 351
Agentless 352
Procedures 352
Attributes 352
Infrastructure Automation 352
Infrastructure as Code 352
Inventory 353
Automated Configuration Management 353
Build Automation 353

APPENDIX Create your own journal 355

9780135591840, TOC, 7/19/19

Updates

Submit Errata

More Information

Pearson IT Certification Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from Pearson IT Certification and its family of brands. I can unsubscribe at any time.

Overview


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about Pearson IT Certification products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information


To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.

Surveys

Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites; develop new products and services; conduct educational research; and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.

Newsletters

If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@informit.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information


Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.

Security


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.

Children


This site is not directed to children under the age of 13.

Marketing


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information


If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.

Choice/Opt-out


Users can always make an informed choice as to whether they should proceed with certain services offered by Adobe Press. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.pearsonitcertification.com/u.aspx.

Sale of Personal Information


Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents


California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure


Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.

Links


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact


Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice


We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020