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(am-utils.info)NIS maps

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NIS maps
--------

   When using NIS (formerly YP), an Amd map is implemented directly by
the underlying NIS map.  Comments and continuation lines are _not_
supported in the automounter and must be stripped when constructing the
NIS server's database.

   NIS maps have a default cache mode of `all' (Note: Automount
Filesystem).

   The following rule illustrates what could be added to your NIS
`Makefile', in this case causing the `amd.home' map to be rebuilt:
     $(YPTSDIR)/amd.home.time: $(ETCDIR)/amd.home
         -@sed -e "s/#.*$$//" -e "/^$$/d" $(ETCDIR)/amd.home | \
           awk '{  \
              for (i = 1; i <= NF; i++) \
                  if (i == NF) { \
                  if (substr($$i, length($$i), 1) == "\\") \
                      printf("%s", substr($$i, 1, length($$i) - 1)); \
                  else \
                      printf("%s\n", $$i); \
                  } \
                  else \
                  printf("%s ", $$i); \
              }' | \
         $(MAKEDBM) - $(YPDBDIR)/amd.home; \
         touch $(YPTSDIR)/amd.home.time; \
         echo "updated amd.home"; \
         if [ ! $(NOPUSH) ]; then \
             $(YPPUSH) amd.home; \
             echo "pushed amd.home"; \
         else \
             : ; \
         fi

   Here `$(YPTSDIR)' contains the time stamp files, and `$(YPDBDIR)'
contains the dbm format NIS files.