$ echo –e “This is an article is for beginners. \n the newline character is interpreted by the echo –e command. The echo –e option acts as an interpretation of escape characters that are back-slashed. The output would be “This is an article on basic linux commands”, without the quotes. $ echo “This is an article on basic linux commands” This command is used to display a text or a string to the standard output or a file. The output will be the entire contents of the file(s). The command is written as follows: mkdir Rm –rremoves all the contents in a directory and the directory as well. A directory cannot be removed if it is not empty. This command is used to remove files in a directory or the directory itself. You can use ls – lto see the new file created. The cp command issues a copy of the file second.txt in the same directory. Here the file name gets changed from first.txt to second.txt. The mv command moves a file or renames it. Passwd - changes the password for the user. Note that the normal system users may only change their own password, while root may modify the password for any account. You could change your password or the password of other users. This command is used to change the user account password. Though it looks similar to the pwd command, this command is very different. It displays the current working directory path and is useful when directory changes are made frequently. One way to identify the directory you are working in is the pwd command. Using ctrl Cor shutdown –c: helps in stopping the shutdown process.sudo shutdown –r 2: shuts down and reboots in 2 minutes.sudo shutdown 2:shutdown and turns of the computer after 2 minutes.This will allow you to run the command in elevated rights and once the command is executed you will be back to your normal rights and permissions.Īn example is the shutdown command, which turns off the computer system. The sudo command is used when you just need to run something as a super user, you can use the sudo command. Until you use the exit command, you can continue to be the super user. The su command changes the shell so that it is used as a super user. You must run these as a System Administrator. There are some commands that need elevated rights to run on a Linux system. Recommended Course To Master Linux Commands The above command will find all of the words in the files that matched the word ‘failed’. The grep command searches through many files at a time to find a piece of text you are looking for. When you use ls –I you will be able to see more details of the contents in the directory. The example used here changes the location to a Linux directory that is present in all versions of Linux. You can always use ctrl c to return to the command line. Otherwise the listing scrolls down rapidly. The command ls -l | more – helps paginate the output so you can view page by page. The names in blue represent the names of directories. This is what the ls command does in Linux - it lists files and directories. If you’ve used the Windows command prompt, then you should know that the command dir is used to list the contents in a directory. Here, we list and explain some important basic Linux commands so you can learn how to use Linux with ease.Ĭlick here to download Hackr.io’s free Basic Linux Commands PDF. The reason Linux is so popular is that it is one of the most reliable, secure, and robust operating systems available. In fact, stock exchanges across the world in several countries run on Linux. It runs most of the Internet and several supercomputers. Linux is so ubiquitous that it is present in cell phones, cars, refrigerators, and Roku devices. Data from TOP500 shows that Linux powers 100% of the world’s top 500 supercomputers, which is an astonishing statistic. Linux is a powerful operating system that is pervasively used today, even though it might not be apparent to you. How Do I Get a List of All Commands in Linux?
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