Useful Linux Commands

Directory Operations

1. pwd -> displays current working directory.
2. mkdir -> make a new directory.
3. cd directory_name -> move into that directory.
4. ls -> list contents of current directory.
5. ll -> list contents of current directory with detailed info.
6. rm -r directory_name -> remove a directory

File Operations

1. touch filename -> creates a empty file.
2. ls -l -> list the contents in current directory.
3. echo "message" -> to display any message.
4. echo "message" > new.txt -> move the message in text file.
5. read -> to take input from user.
6. read -p "Enter any message" n -> to display and take input from the user.
7. nano filename -> to create and open new file.

copy/rename/move operations

1. cp A.txt B.txt -> makes a copy of A.txt names it to B.txt in current directory.
2. mv testdir newdir -> renames testdir to newdir in current path.