Linux Commands

• uname -a
  • to obtain information about the operating system and hardware on which it is running.
    
• dpkg --print-architecture
  • to obtain information about architecture
• cp source target
  • to copy file from source to target ex - ( cp /home/user.txt /usr/share )
• pwd
  • stands for the present working directory
• Ubuntu : apt list --installed Debian : dpkg list --installed
  • used to check for installed packges.
• Debian : dpkg --get-selections | grep pkg-name
  • to search for specific package ex - ( dpkg --get-selections | grep postgres )
• apt-get update
  • use to update packges
• apt-get upgrade
  • use to upgrade packages
• sudo lshw -C display
  • use to get display information
• get all services list
  • sudo service --status-all
• tail logs
  • sudo tail -f fileName.txt