LINUX commands everyone should know.

NOTE: filename.txt | file1.txt | file2.txt | folder name. They are just used to describe the working of commands properly. You can use any random name of your wish.

• pwd : It will print your working directory. It will tell you in which folder/directory you are currently present.

pwd

• cd : It will change your directory. It will help you to move in and out of any directory/folder.

cd foldername

• touch : It is used to create a new file in that directory.

touch filename.txt

• mkdir : It is used to create a new folder/directory.

mkdir foldername

• ls : It is used to print all the files and folders present in your directory.

ls

• cat : It is used to print the content present in the file.

cat filename

• echo : It will print the content present in your file. The first command will print hello siya vats as it is on the terminal. The second command will write I am learning LINUX commands inside filename.txt

echo "hello siya vats"
echo "I am learning LINUX commands" >> filename.txt

• whoami : It will tell you the name of the user.

whoami

• man : It will give you the description of a command and what is the purpose of that command.

man ls/mv/pwd/whoami/....etc

• mv : It will move a file from one folder to another. It will move file1.txt inside the newfolder.

mv file1.txt newfolder

• diff : It will compare two files line by line.

diff file1.txt file2.txt

• ls -l : It will give the value of file permission to the user, guest, and others.

ls -l filename.txt

• locate : It will locate all the files ending with .txt.

locate "*.txt"

• find : It will show all the files even hidden files.

  -type d: show all directory

  -type f: show all files

find .-type d
find .-type f

• rm : It will remove a file.

• rm -f : It will remove any folder.

• rm * : It will remove all files.

rm file1.txt
rm -f foldername
rm *

• vim : It will give you a space to write anything in the file. To exit out of that space enter: ESC + : + x then press enter.

vim file1.txt

• df : It will tell you the disk space usage.

df

• head : It will only display the starting 10 lines of the file.

head file1.txt

• tail : It will only display the ending 10 lines of a file.

tail file2.txt

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