2. Also, many times it happens that we forgot to send a process in background but we can still send a foreground process to background by first suspend that process (ctrl + Z) and then, just type "bg or bg %process_number". If you also want to not get distracted from the errors occuring in the background process, we can type this command "command (eg "python mohit/py") 2> /dev/null &". It will send the error messages to the null. Instead, you want to write the errors in a specific file, then write "python mohit.txt 2> error.txt".