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Introduction
1. Introduction to the UNIX Operating System
- 1.1. What is UNIX?
- 1.2. Types of Unix
- 1.3. The UNIX operating system
- 1.4. Files and processes
- 1.5. The Directory Structure
- 1.6. Starting an UNIX terminal
2. Tutorial One
- 2.1. Listing files and directories
- 2.2. Making Directories
- 2.3. Changing to a different Directory
- 2.4. The directories . and ..
- 2.5. Pathnames
- 2.6. More about home directories and pathnames
- 2.7. Summary
3. Tutorial Two
- 3.1. Creating files
- 3.2. Copying Files
- 3.3. Moving Files
- 3.4. Removing Files and directories
- 3.5. Displaying the contents of a file on the screen
- 3.6. Searching the contents of a file
- 3.7. Summary
4. Tutorial Three
- 4.1. Redirection
- 4.2. Redirecting the Input
- 4.3. Redirecting the Output
- 4.4. Pipes
- 4.5. Summary
5. Tutorial Four
- 5.1. Wildcards
- 5.2. Filename Conventions
- 5.3. Getting Help
- 5.4. Summary
6. Tutorial Five
- 6.1. File system security (access rights)
- 6.2. Changing access rights
- 6.3. Processes and Jobs
- 6.4. Listing suspended and background processes
- 6.5. Killing a process
- 6.6. Summary
7. Tutorial Six
- 7.1. Other useful Unix commands
- 7.2. Summary
8. Tutorial Seven
- 8.1. Compiling UNIX software packages
- 8.2. Download source code
- 8.3. Extracting source code
- 8.4. Configuring and creating the Makefile
- 8.5. Building the package
- 8.6. Running the software
- 8.7. Stripping unnecessary code
- 8.8. Summary
9. Tutorial Eight
- 9.1. UNIX variables
- 9.2. Environment variables
- 9.3. Shell variables
- 9.4. Using and setting variables
- 9.5. Setting shell variables in the .cshrc file
- 9.6. Setting the path
- 9.7. Summary
10. Tutorial Nine
- 10.1. What is *vi*?
- 10.2. Essential commands
- 10.3. Practical introduction to *vim*
11. Tutorial Ten
- 11.1. Introduction to shell script
- 11.2. Create and execute a script
- 11.3. Passing parameters to the shell
12. Annex I: basic commands
13. Annex II: First steps with Erle
14. Annex III: Network connection with Erle
- 14.1. Connecting with Erle
- 14.2. A new Erle-terminal
- 14.3. Transferring files form your computer to Erle

Erle Robotics Unix Introduction Gitbook Free

Extracting the source code

Now, in your home-erle-directory, where you have saved the file, type:

ls -l

working with erlerobot:

inerle

As you can see, the filename ends in tar.gz. The tar command turns several files and directories into one single tar file. This is then compressed using the gzip command (to create a tar.gz file).

First unzip the file using the gunzip command. This will create a .tar file.

gunzip units-1.74.tar.gz

Then extract the contents of the tar file.

tar -xvf units-1.74.tar

Again, list the contents of the download directory, then go to the units-1.74 sub-directory.

cd units-1.74