Dennis Ritchie, Core developer of Unix OS and Creator of C Language.
One Day One Command
script — Record the user’s activities on a terminal.
Script makes a typescript/record of everything printed on your
terminal. It is useful for anyone, who need a hard copy record of an
interactive session as proof, and the typescript text file can be
Press Ctrl+D/exit/logout to Stop the Script Program.
$ script — Start the recording in a file (Default File Name
$ script MyFile — Record the output in MyFile.
$ script -a — Record the output in Appending Mode.
$ cat typescript — Show the recorded content.
Read: man script