How to log to file and to console

try using tee?

| tee log.txt

instead of

> log.txt

There are various ways by which you can make log. But the first and the foremost thing is what actually you want to put in your log. You can do that in various ways:

1. Tee command splits the output of a command so that it can be seen on the display and also be saved in a file.

   command | tee log.txt
   

   The above command will display the output to terminal as well as it will redirect the output to the file log.txt.

2. The script command makes a typescript(copy) of everything printed on your terminal:

   script -a log.txt
   

Use the tee command:

some_command | tee log.txt