gcc-alias.fish

#!/usr/bin/env fish

function usage
     echo "Usage: gcc-alias [on|off]"
end

if test (count $argv) -ne 1
   usage
   exit 1
end


switch $argv
       case on
       	    if test -e /usr/bin/gcc-real
	       echo 'Already on'
	    else
	       echo 'Aliasing gcc'
	       mv -v /usr/bin/gcc /usr/bin/gcc-real
      	       and mv -v /usr/bin/g++ /usr/bin/g++-real
	       and mv -v /usr/bin/cc /usr/bin/cc-real
      	       and mv -v /usr/bin/c++ /usr/bin/c++-real
	       
	       and ln -sv (which clang) /usr/bin/gcc
       	       and ln -sv (which clang++) /usr/bin/g++
	       and ln -sv (which clang) /usr/bin/cc
       	       and ln -sv (which clang++) /usr/bin/c++
	    end
	case off
	     if test -e /usr/bin/gcc-real
	        echo 'Restoring gcc'
	     	rm -v /usr/bin/gcc
		and rm -v /usr/bin/g++
	     	and rm -v /usr/bin/cc
		and rm -v /usr/bin/c++

		and mv -v /usr/bin/gcc-real /usr/bin/gcc
		and mv -v /usr/bin/g++-real /usr/bin/g++
		and mv -v /usr/bin/cc-real /usr/bin/cc
		and mv -v /usr/bin/c++-real /usr/bin/c++
	     else
		echo 'Already off'
	     end
	case '*'
		usage
end