How to redirect Valgrind's output to a file?

Question

While working with Valgrind tool, i need to log the details produced by valgrind tool. How can I accomplish that? I tried something like,

 valgrind a.out | test
         


        

Answer 1

By default, Valgrind writes its output to stderr. So you need to do something like:

valgrind a.out > log.txt 2>&1

Alternatively, you can tell Valgrind to write somewhere else; see http://valgrind.org/docs/manual/manual-core.html#manual-core.comment (but I've never tried this).