Append stderr and stdout to file

Question

I have this:

npm install "$tgz_path"  &>> "$HOME/.r2g/logs/r2g.log";

but that is syntactically incorrect. How do I append stdout+stderr to that log file?

Answer 1

That syntax is valid in bash. From man bash:

The format for appending standard output and standard error is:

&>>word

A more basic way to write it (that works in more shells) will be:

$ npm install "$tgz_path" >>word 2>&1 "$HOME/.r2g/logs/r2g.log";