installed ls && echo ls installed
installed doesnt-exist && echo doesnt-exist installed
+# Tests for m4().
+echo "Simple test file for m4.
+IF(TEST,m4)
+ m4
+FI
+IF(TEST,n4)
+ n4
+FI" > tmp/test.m4
+m4 tmp/test -DTEST=m4
+# Remove the line with the current date as it changes every time.
+cat tmp/test | grep -v "It was generated from tmp/test.m4"
+
# vim: ft=sh