Linux Basic Command

Linux Basic Command

1. touch: Create new file.
2. rm: Remove specified file.
3. whereis: Locate binary, source and manual sections for specified files.
4. which: Show the full path of commands.
5. type: Declare variables and/or give them attributes.
6. grep: Print lines matching a pattern.
7. cp: Copy files and directories.
8. mv: Move or rename files.
9. rmdir: Remove directories.
10. whoami: Print effective user id.
11. locate: List files in database that match a pattern.
12. find: Search files in a directory hierarchy.

Viewing File Commands 

1. cat: Acronym for concatenate. It display the contents of a file.
2. less: Display output one screen at a time.
3. head: Print the first part of the files.

 Managing files and directories command 

1. man: Give information about any command.
2. echo: Display message on screen. Useful for showing the values of environmental variables.
3. pwd: Stands for print working directory. Allows you to know the directory which you're located.
4. ls: Print all the files in current directory.
5. usermod: Modify user account information.
6. cd: Change directory.
7. info: Provide current information.

File Permissions

1. r - Read permission, view what in the file.
2. w - Write Permission, change the file content.
3. x - Execute Permission, run the file as a program.

Change File Ownership

1. chmod: Change file permission
2. chgrp: Change group ownership
3. chown: Change user ownership