What the question says.
Ultimately what I want is to execute gcc and capture the output if there's an error. The problem is errors are written to stderr instead of stdout. On Linux I can do
gcc foo.c 2>&1
How can I accomplish this on Windows?
There is. Simply right click into the console window, select Mark. With your mouse select the desired area and right click. Now you can paste it into a text file with Ctrl-V.
If you need the output of a program into a text file, run it like this:
myprogram.exe > myfile.txt
See here about redirecting:
1. Using command redirection operators
2. Redirecting Error Messages from Command Prompt: STDERR/STDOUT
You can do what you want like this: D:\>dir 1> test.txt 2> testerr.txt