In this article we will be sharing some super helpful Linux command tips and tricks that will save you a lot of time and increase your productivity. Linux can be intimidating, especially for those of us who are new to it, but with these tips and tricks, you’ll be a Linux pro in no time!
First, let’s talk about what Linux command line is. Linux command line is a text-based interface used to interact with the operating system. It allows you to execute commands and perform tasks, such as moving files or creating directories, directly from the terminal.
Now that we’ve covered the basics, let’s dive into the tips and tricks.
1. Using Tab to Auto-Complete Commands
This is one of the most basic but helpful tips. Instead of typing out the whole command, you can use the Tab key to auto-complete it. This saves a lot of time and prevents errors from typos.
For example, if you want to change directory to Documents, you can type “cd Doc” and then hit Tab. The terminal will auto-complete the command to “cd Documents”. This works for commands, file names, and directories.
2. Use of Aliases
Aliases are shortcuts for frequently used commands. They allow you to execute a long command with a short keyword. This saves time and makes it easier to remember commands.
For example, if you frequently use the command “ls -lha”, you can create an alias “ll” for it. Then, instead of typing out “ls -lha” every time, you can simply type “ll”.
To create an alias, type “alias alias_name=’command'”. For example, “alias ll=’ls -lha'”.
3. Use of History Command
The history command allows you to see a list of all the commands you’ve executed in the terminal. This is helpful when you want to repeat a command you’ve used before, but can’t remember the exact syntax.
To use the history command, simply type “history” in the terminal. This will show you a list of all the commands you’ve executed, along with their numbers. To execute a command from the history, type “!number”. For example, “!15” will execute the command with the number 15.
4. Use of grep Command
The grep command allows you to search for specific text in a file or directory. This is helpful when you’re looking for a specific line of code or a particular file.
To use the grep command, type “grep ‘text’ file_name”. For example, “grep ‘Hello’ file.txt” will search for the word “Hello” in the file “file.txt”.
5. Using Pipes
Pipes allow you to combine multiple commands into a single command. This is helpful when you want to perform multiple tasks at once.
To use pipes, type the vertical bar “|” between commands. For example, “ls | grep ‘file'” will show you a list of files that contain the word “file”.
6. Using find Command
The find command allows you to search for files and directories based on certain criteria, such as name, size, and modification time.
To use the find command, type “find directory -name ‘filename'”. For example, “find /home -name ‘file.txt'” will search for the file “file.txt” in the directory “/home”.
You can also search for files based on their size using the “-size” option. For example, “find /home -size +10M” will search for files that are larger than 10 megabytes in the directory “/home”.
7. Using tar Command
The tar command allows you to create and extract compressed archive files. This is helpful when you want to back up files or transfer them to another system.
To create a compressed archive file, type “tar -czvf archive_name.tar.gz directory”. For example, “tar -czvf backup.tar.gz /home/user/Documents” will create a compressed archive file named “backup.tar.gz” of the “Documents” directory.
To extract a compressed archive file, type “tar -xzvf archive_name.tar.gz”. For example, “tar -xzvf backup.tar.gz” will extract the contents of the “backup.tar.gz” file.
8. Using scp Command
The scp command allows you to securely transfer files between two systems over a network. This is helpful when you need to transfer files between your local system and a remote server.
To transfer a file from your local system to a remote server, type “scp file_name username@remote_host:/remote/directory”. For example, “scp file.txt firstname.lastname@example.org:/home/john/documents” will transfer the file “file.txt” to the remote server at the directory “/home/john/documents”.
To transfer a file from a remote server to your local system, type “scp username@remote_host:/remote/directory/file_name /local/directory”. For example, “scp email@example.com:/home/john/documents/file.txt /home/user/Documents” will transfer the file “file.txt” from the remote server to your local “Documents” directory.
9. Using chmod Command
The chmod command allows you to change the permissions of files and directories. This is helpful when you need to restrict or grant access to certain files or directories.
To change the permissions of a file, type “chmod permission file_name”. For example, “chmod 755 file.txt” will give read, write, and execute permissions to the owner, and read and execute permissions to the group and others.
To change the permissions of a directory and its contents recursively, add the “-R” option. For example, “chmod -R 755 /home/user/Documents” will give read, write, and execute permissions to the owner, and read and execute permissions to the group and others for the “Documents” directory and its contents.
10. Using top Command
The top command allows you to monitor system processes and resource usage in real-time. This is helpful when you want to identify processes that are using too much CPU or memory.
To use the top command, simply type “top” in the terminal. This will show you a list of processes running on your system, along with their CPU and memory usage. You can use the arrow keys to navigate the list and the “q” key to exit.
And there you have it, security gurus! These are 10 super helpful Linux command tips and tricks that will save you a lot of time and increase your productivity. With these tips, you’ll be able to work more efficiently and get more done in less time. Don’t be afraid to experiment and try out new commands – you never know what other helpful tips and tricks you might discover!