If you're new to Linux, the command line interface can be intimidating. But don't worry! These top 5 most useful Linux commands will help you get started with the basics.
ls
- List directory contentsThe ls
command is used to list the contents of a directory. By default, it lists the contents of the current working directory. To list the contents of a specific directory, use the command followed by the path to the directory. For example, to list the contents of the /var/log
directory, use:
ls /var/log
The ls
command also supports a variety of options, such as the -l
option to display the contents of the directory in a long format.
cd
- Change directoryThe cd
command is used to change the current working directory. To change to a specific directory, use the command followed by the path to the directory. For example, to change to the /var/log
directory, use:
cd /var/log
You can also use the cd
command without any arguments to change to your home directory.
mkdir
- Make directoryThe mkdir
command is used to create a new directory. To create a new directory, use the command followed by the name of the directory. For example, to create a directory named mydir
, use:
mkdir mydir
You can also create multiple directories at once by separating the directory names with spaces.
rm
- Remove files or directoriesThe rm
command is used to remove files or directories. To remove a file, use the command followed by the name of the file. For example, to remove a file named myfile.txt
, use:
rm myfile.txt
To remove a directory and its contents, use the command with the -r
option. For example, to remove a directory named mydir
and all of its contents, use:
rm -r mydir
Be careful when using the rm
command, as it will permanently delete the specified files or directories.
grep
- Search for text in filesThe grep
command is used to search for text in files. To use the command, specify the text you want to search for followed by the name of the file or directory you want to search. For example, to search for the word "error" in a file named logfile.txt
, use:
grep "error" logfile.txt
The grep
command also supports a variety of options to control the search behavior, such as ignoring case or searching recursively through subdirectories.
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