Summer-Camp-RIG-2022

Session : Linux by Erin

• pwd : Current working directory (eg : /home/erin/Documents )
• ls : List files in directory
• clear : Clear the terminal
• cd : Change directory (eg cd ~/Documents , ~ means home directory )
• cd .. : Navigate to a directory behind ( /home/erin/hello ---> /home/erin )
• cd - : Navigate to previous directory
• mkdir Linus_hands_on : make a new folder called Linus_hands_on
• touch my_file.txt : create a file my_file.txt
• nano my_file.txt : Open nano text editor
• cat my_file.txt : Display contet of the file in the terminal
• cp my_file.txt ~/file.txt : Create a copy of file in the home directory with name file.txt
• mkdir -p tutorials/RIG : make a folder tutorials followed by RIG within that folder
• mv my_file.txt tutorials/RIG/my_file.txt : move my_file.txt to tutorials/RIG
• mv my_file.txt linux.txt : rename my_file.txt to linux.txt
• cp linux.txt ~/Documents/Linus_hands_on/new.txt : create a copy of linux to Linus_hands_on with name new
• rm new.txt : Remove new.txt (rm can't be used for removing directory (or folder) can be used on for files)
• rmdir RIG/ : Remove directory RIG (only work with empty directory)
• rm -r RIG : Remove directory RIG with content recursively
• date >> date.txt : Insert today's date to date.txt (eg Tue May 2022 ....)
• drwxrwxr-x:
• ls -l : Shows the permissions of the file (read wite access)
• ls | grep Documents : Search for file/folder with Documents
• ls | grep '*.pdf' : find files of type pdf
• find -name download.png : find file download.png
• echo "Hello World" : Acts like print statement for terminal
• echo $SHELL : outputs /bin/bash
• man mkdir: shows manual for make directory
• nano command.sh: create a .sh file

inside command.sh

echo "Hello RIG"

• chmod u+x command.sh : (add permission )Change permission for to be executable
• ./command.sh : Execute the contents of the file
• chmod u-x command.sh : remove permission of the file

r w x : read wite execute 4 2 1 : (write) : 2 (read and write) : 4+2 = 6

• chmod 764 command.sh : root user read write excute (sum 7) , currecnt user read and write , other user read
• ps : Show process id
• ps -aux | grep arduino : Show process id of arduino
• kill 15187 : Kill arduino process
• sudo apt install htop : Install application called htop (can kill process , like task manager in windows)

Make changes in Windows drive

• Unmount windows drive

• sudo ntsfix /dev/sda5 : Give edit access to windows directory

• sudo apt install tldr or sudo apt install neofetch

• tldr chmod : Give a small manual read for the command chmod

• dpkg -i google-chrome-stable.deb : Install a .deb file (wont check missing dependencies)

• sudo apt intsall google-chrome-stable.deb : ( Install any missing dependencies )