• cd - change directory
  • cd tmp
• ~ - home directory
  • cd ~
• / - root directory
  • cd /
• sudo - super user
  • sudo shutdown -h now
• ssh - secure shell to a remote machine
  • ssh remoteMachine
  • ssh remoteMachine@ipaddress
• mkdir - makes a directory of your choice in current directory
  • mkdir directoryName
• rm - deletes argument file
  • rm fileName
• rmdir - deletes directory in argument with no files inside it
  • rmdir directory name
• touch - makes a file in the current directory with the name of your choice
  • touch fileName
• ls - shows files and directories within current directory
• ls -l -shows files and directories within directory with shielding info
• nano - a text editor
  • nano fileName
• scp - secure copy to or from a remote machine via local host or remote host
  • scp fileName user@machine:

To reconnect to the IRC type the following:

  screen
  irssi
  /connect irc
  /join csci

• screen -r - move back in to a created screen (our chat)
• cntrl + a then d - moves back to original terminal outside of screen

• fixrepo - repository reset
• hg status - see states of files
• hg add - adds files to repository
• hg commit -m “message” - commits to repository with a message
• hg push - pushes files to repository

• sudo shutdown -h now - shutdown Pi
• gpio readall - displays the status of the General Purpose Input Output pins on the Pi
• gpio mode pinNumber Status - sets the pin number to IN or OUT
• gpio write pinNumber Status - sets the value of the pin number to 1(one) or 0(zero)