Q:

How to combine these two commands?: ./script.sh > logfile.log and ./script.sh 2> logfile.log

How to combine these two commands? 
./script.sh > logfile.log 

and 
./script.sh 2> logfile.log

Thank you!

A:

In bash, to redirect both standard output and standard error to the same file, you can write
./script.sh &> logfile.log

If you want to be compatible with other shells,
./script.sh > logfile.log 2>&1

