Command Line Shortcuts File Globbing wildcard Expansion | Shortcut Tab key Linux

The uses of wildcard allow one pattern to expand to multiple filenames by a process called globbing.
Example if you like to remove file with extension .mp3
#rm *mp3
• * matches zero or more character
• ? matches single character
• (0-9) matches range of numbers
• (system) matches any character like system
• (^client) allow character all except the character in the list.


Tab key it is complete either a command name or file name.
#ls st
Then it is complete the command in Linux
#ls student.txt