To redirect stdout to a truncated file in Bash, I know to use:
cmd > file.txt
To redirect stdout in Bash, appending to a file, I know to use:
cmd >> file.txt
To redirect both stdout and stderr to a truncated file, I know to use:
cmd &> file.txt
How do I redirect both stdout and stderr appending to a file? cmd &>> file.txt did not work for me.