PowerShell. How to redirect error output to both file and terminal at the same time?

Question

PowerShell

When compiling, you need to send the standard error output to the "error.txt" file, BUT , while the terminal should also have the same output:
g++ test.cpp -o test 2>> error.txt

Answer 1

It's the mistakes? then the easiest way is to a file, and then read it,
and if everything is in a row, then

g++ test.cpp -o test 2>&1 | Tee-Object -Filepath error.txt

Found another option

invoke-command { 'txt1'; write-error 'err'; 'txt2' } -ErrorVariable e
#пример вызова внешней команды
invoke-command { python 1.py 2>&1 } -ErrorVariable e
$e | Out-File error.txt