git clean -xdf
git pull upstream master & git push origin master
:: Build Debug libraries on top of Release runtime:
-build clr+libs -rc Release
+build.cmd clr+libs -rc Release
:: The above you may only perform once in a day, or when you pull down significant new changes.
:: If you use Visual Studio, you might open System.Text.RegularExpressions.sln here.
-build -vs System.Text.RegularExpressions
+build.cmd -vs System.Text.RegularExpressions
:: Switch to working on a given library (RegularExpressions in this case)
cd src\libraries\System.Text.RegularExpressions