Learn 72 Linux Terminal Commands in just 15 minutes | Complete Guide | Linux Basics for Beginners

Learn 72 Linux Terminal Commands in just 15 minutes | Complete Guide | Linux Basics for Beginners

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OPEN TERMINAL AND TYPE THE FOLLOWING 1) sudo - SuperUser DO command Meaning- Allows you to run commands with administrative privileges 2)pwd -Print working directory Meaning -It prints the directory in which you are currently in. 3) ls - list contents of current directory Meaning - shows us the requisite contents so present in the directory 4) cd - change directory Meaning - useful , when you want to change your directory . 5) cd .. - helps us to go back 6) clear - helps us to clear the screen 7) cd / - enables user to go back to root 8) cp - enables user to copy a file 9)rm - enables user to remove a file / just like delete in windows 10) cp sourcefilename /destination_address 11) mkdir foldername - creates a new folder 12) rmdir foldername - delete a folder 13) man commandname 14) cal command - displays the calender of the current month 15) date command - displays current time and date 16) echo command - it gives echo , or displays the same content , we type 17) tty command - displays current terminal 18) whoami command - tells us about the user who is currently logged in 19) id command - prints users and groups of the current user 20)help command- syntax- commandname --help 21) whatiscommand - this command gives one line description of a particular command 22) info command - gives us more details than man command don't forget to press q if you want to go back !!!! 23) touch command - enables a user to create a new file syntax - touch filename 24) move command syntax - mv sourcefilename destination_address 25) ls -l 26) stat command syntax - stat filename 27) head command - displays first few lines of a file syntax - head address 28) syntax - head -no_of_lines address Now , first 15 lines are displayed !!!!! 29) tail command - displays last few lines syntax - tail address 30) syntax - tail -no_of_lines address 31) word command - counts lines ,words and letters of the source file syntax - wc address 32)‘Pico’ is a text editor in Linux. ‘Nano’ editor is inspired from ‘pico’. syntax - pico address 33) vi command - opens a visual editor , just like pico syntax - vi address 34) alias command - T syntax - alias c="clear" 35) w command w command is used to check which users are logged in to the system, and what command they are executing at that particular time: 36) last command Displays information about the users who logged in and out of the system. 37) lastb command Displays last unsuccessful login attempts 38) du command 39) df command The df reports file system usage 40)fdisk command syntax - fdisk -l 41) netstat command syntax - sudo apt install net-tools for netstat command syntax - netstat 42) history command -tells us about the commands we have entered so far !!! 43) passwd command - to change your password ,you may use this command. 44) shutdown command syntax -- shutdown -h now 45) update command syntax - sudo apt-get update 46) ls -a command -- to view hidden files 47) lsb_release -a – displays Distribution info 48) cat /etc/issue – displays current distribution and version 49) apt-cache showpkg packagename –displays packagename's version and dependencies 50) uname -r - displays Linux kernel version 51) uname -a – displays all kernel details COMMANDS FOR GRAPHICS CARD INFO 52) glxinfo – details about OpenGL, the Xserver, and your graphics card 53) glxinfo | grep direct – It will show if you have direct 3d rendering or not 54) glxinfo | grep vendor – graphics card vendor 55) lspci | grep VGA – specific graphics card model 56) glxgears – a simple 3d benchmark, prints frame rate to the terminal 57) xrandr – supported display resolutions Audio command 58) aplay --list-devices – more audio device information Networking commands 59) lspci | grep Ethernet – Ethernet controllers 60) ifconfig – networking interfaces, IP addresses, and more Processor commands 61) cat /proc/cpuinfo – all processors, clock speeds, flags, and more 62) cat /proc/loadavg – processor load average for the last 1, 5, and 15 minutes 63) top – press C key to sort processes by CPU usage Memory commands 64) cat /proc/meminfo – amount of RAM and swap, and how much is being used for what 65) free -m – total, used, and free memory shown in MB 66) top – press M key to sort processes by memory usage Hard - disk commands 67) df -H – partitions, as well as their mount-points and usage in GB 68) sudo fdisk -l – all partitions, their device names, and positions on disk USB commands 69) lsusb – USB buses and attached devices Some mics commands 70) lspci – all PCI devices 71) lshw – another program for listing hardware 72) uptime – current time elapsed since last reboot, users, and load average

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