Unix is a family of computer operating systems that derive from the original Unix from Bell Labs.
This is the Unix philosophy: Write programs that do one thing and do it well. Write programs to work together. Write programs to handle text streams, because that is a universal interface.
Expect the output of every program to become the input to another, as yet unknown, program. Don’t clutter output with extraneous information. Avoid stringently columnar or binary input formats. Don’t insist on interactive input.
|List files in the directory|
|Remove file or directory(-r)|
|Copy file or directory(-r)|
|Move file or directory|
|Count words in file|
|Read the manual|
|Reads content of files sequentially|
|Make new directory|
|Show system date|
|Searches text for matches of a regular expression|
|Displays the tail end of a file or data|
|Send output from |
|Receive input from file |
|Connect output of |
|Debug, Delete, Directory||Quiet, Quit|
Found a mistake? Submit an patch to unix.