I am not gonna tell about some scripting languages, but script.

script is a GNU project which is a simple terminal application which can log the activities in a terminal with their outputs. To start script, you just have to give script in your terminal. Then you will see a message saying Script started, file is typescript (If you have to mention filename, then give script <filename> ). Once you finished up with everything which needs to be logged, just press ctrl-d or exit and that will exit script with a message script done, file is typescript(or filename you seleced). For the better view of the log, use cat or more.

It is helpful to show somebody a log about what you have done in terminal. This terminal logger is quite a simple and useful application right?