diff compares files byte by byte, while cmp compares files line by line

cmp displays detailed differences, while diff does not

diff compares files line by line, while cmp compares files byte by byte

Both commands provide identical output

Unix is open-source, while GNU is not

GNU is not Unix but a free, Unix-like system

Unix was developed after GNU

Deletes all files with .txt extension

Finds and lists all files with the .txt extension in the system

Finds files with names starting with * and ending with .txt

Locates all directories with a .txt extension