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# Chapter 1
*Selecting an Operating System.*
## Suggested Exercises
* Make a list of the programs you run as an ordinary user, including everything from a calculator applet to a major office suite. Look for equivalents at http://www.linuxrsp.ru/win-lin-soft/table-eng or http://www.linuxalt.com. Is there anything you can't find? If so, try a Web search to find an equivalent.
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# Chapter 2
*Investigating Linux’s Principles and Philosophy*
## Suggested Exercises
* Read the Features Web page on FreeBSD, http://www.freebsd.org/features.html, a competitor to Linux. How would you say it differs from Linux?
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# Chapter 3
*Understanding Software Licensing*
## Suggested Exercises
* Look up the GPLv2, GPLv3, and BSD 2-clause licenses. http://www.opensource.org/licenses/ is a good place to find them all.) Read them and compare them. Which would you use if you were to write an open source program?
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# Chapter 4
*Using Common Linux Programs*
## Suggested Exercises
* Try at least two different desktop environments. Use each desktop environment for your normal computing tasks for a day or two so that you can decide which you prefer.
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# Chapter 5
*Managing Hardware*
## Suggested Exercises
* At a Linux shell prompt, type `uname -a`, `lscpu`, and `cat /proc/cpuinfo` [Compare the output and try to determine your CPU's capabilities. In particular, can it run 64-bit applications, and is your current distribution a 32-bit or 64-bit distribution?
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# Chapter 6
*Getting to Know the Command Line*
## Suggested Exercises
* Read the `man` pages for the following commands: `man`, `less`, `cat`, `cd`, `ls`, `grep` and `su`.
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# Chapter 7
*Managing Files*
## Suggested Exercises
* Create a file with `touch` (or some other program) and then practice copying it with `cp`, renaming it with `mv`, moving it to another directory with `mv` and deleting it with `rm`.
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# Chapter 8
*Getting Help*
## Suggested Exercises
* Fully read at least three `man` pages for common Linux commands, such as `ls`, `cp`, `cat`, or `less`. What have you learned about these commands that goes beyond the descriptions in this book?
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# Chapter 9
*Using Programs and Processes*
## Suggested Exercises
* Is your distribution's software up to date? Locate the option in your desktop environment's menus to run a package manager and check that the system is up to date. A computer running out-of-date software can be vulnerable to bugs and security threats, so keeping your software updated is important!
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1. Which of the following commands will print lines from the file `world.txt` that contain matches to `changes`and `changed`?
* A) `grep change[ds] world.txt`
* B) `tar change[d-s] world.txt`
* C) `find "[change\'d\|s]\'" world.txt`
* C) `find "change'd|s'" world.txt`
* D) `cat world.txt changes changed`
* E) `find change[\^ds] world.txt`
* E) `find change[^ds] world.txt`
2. Which of the following redirection operators appends a program's standard output to an existing file, without overwriting that file's original contents?
* A) `|`
* B) `2>`
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7. ASCII supports `____________` unique characters.
8. Three keystrokes that can initiate a search-and-replace operation in `nano` are F14, `____________` and `____________`.
9. While in Vi's command mode, you can type `____________` to undo a change.
* Ctrl+F
* Ctrl+W
# Chapter 12
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* B) `chmod`
* C) `ls`
* D) `chown`
4. TruE) e or false: A file with permissions of 755 can be read by any user on the computer, assuming all users can read the directory in which it resides.
4. True or false: A file with permissions of 755 can be read by any user on the computer, assuming all users can read the directory in which it resides.
5. True or false: Only `root` may use the `chmod` command.
6. True or false: Only `root` may change a file's ownership with `chown`.
7. What option causes `chown` to change ownership on an entire directory tree?
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7. The `____________` program serves as a multi-purpose network tool; it can do many of the same things as `ifconfig`, `route`, and several others.
8. The traditional name for the first Ethernet interface in Linux (but not in recent versions of Fedora) is `____________`.
9. A `____________` is a program or system configuration that blocks or enables network access to, from, or through a computer based on criteria you specify.