+DIFF=${DOTFILES_DIFF:-$(which diff)}
+GIT=${DOTFILES_GIT:-$(which git)}
+LN=${DOTFILES_LN:-$(which ln)}
+MV=${DOTFILES_MV:-$(which mv)}
+PATCH=${DOTFILES_PATCH:-$(which patch)}
+SED=${DOTFILES_SED:-$(which sed)}
+RM=${DOTFILES_RM:-$(which rm)}
+RSYNC=${DOTFILES_RSYNC:-$(which rsync)}
+TAR=${DOTFILES_TAR:-$(which tar)}
+TOUCH=${DOTFILES_TOUCH:-$(which touch)}
+WGET=${DOTFILES_WGET:-$(which wget)}