+### Running random commands.
+
+CMD = echo %d %a
+subst-command = $(subst %d,$(call chroot-dist,$1), \
+ $(subst %a,$(call chroot-arch,$1), \
+ $(subst %r,$1, $(CMD))))
+
+run: $(foreach c,$(ALL_CHROOTS),run/$c)
+$(foreach c,$(ALL_CHROOTS),run/$c): run/%:
+ $(V_AT)$(call v_print,RUN,$(call subst-command,$*))\
+ $(call subst-command,$*)
+
+###--------------------------------------------------------------------------