Workshop reference book

Here you will find some useful informations about the workshop image.

Credentials

Linux:
- User: momo
- Password: momo
GeoServer:
- User: admin
- Password: geoserver
PostgreSQL:
- User: momo
- Password: momo

Useful paths

Your home directory: /home/momo
Workshop directory: /home/momo/materials
Tomcat webapp directory: /opt/tomcat/webapps

Useful terminal commands

As you may not familiar with Linux you will find a small list containing the most helpful terminal commands used in this workshop.

Navigate to a directory: $ cd {PATH_TO_DIRECTORY}
Navigate to the upper directory: $ cd ..
Navigate to your home directory: $ cd ~
Navigate to the root directory: $ cd /
List all files and directories of a folder (inlong list format): $ ls -l or $ ll

File and directory manipulation

Creation
- Of a file: $ touch {FILE_PATH_AND_NAME}
- Of a directory: $ mkdir {DIRECTORY_PATH_AND_NAME}
Removal
- Of a file: $ rm {FILE_PATH_AND_NAME}
- Of a directory: $ rm - rf {DIRECTORY_PATH_AND_NAME}
Change ownership:
- For a single file $ chown {GROUP_NAME}:{USER_NAME} {FILE_PATH_AND_NAME}
- For a completer folder (recursively) $ chown -R {GROUP_NAME}:{USER_NAME} {FILE_PATH_AND_NAME}

Execution

Make a file executable: $ chmod +x {FILE_PATH_AND_NAME}
Run an executable file: $ ./myExecutable.sh

Compress and extract

Create an archive: $ tar -cvzf {ARCHIVE_FILE_NAME}.tar.gz {DIRECTORY_TO_ARCHIVE}
Extract an archive: $ tar -xvzf {ARCHIVE_FILE_NAME}.tar.gz

Services

Start/Stop/Restart PostgreSQL: $ sudo service postgresql start|stop|restart
Start/Stop/Restart Apache: $ sudo service apache2 start|stop|restart
Start/Stop/Restart Tomcat: $ sudo start|stop|restart tomcat

Other useful commands

Execute command with super user (root) permissions : $ sudo {COMMAND_TO_EXECUTE}
Show manual of a tool: $ man {COMMAND_TOOL_NAME}
Show terminal history: $ history
Live-monitoring of a changing file (e.g. a logfile): $ tail -f {FILE_PATH_AND_NAME}
Execute the last command used: $ !!

Exercises

Open the terminal by clicking the Terminal icon () in the bottom toolbar.
Navigate to your home directory and create a folder named notes by typing:
```
 $ cd ~
```
```
 $ mkdir notes
```
Go to the newly created folder and create a file named workshop-notes.md by typing:
```
$ cd notes/
```
```
$ touch workshop-notes.md
```
Open this file with gedit and enter Linux is great! by typing:
```
$ gedit workshop-notes.md
```