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-rwxr-xr-xtest/ppmbrighten.test8
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diff --git a/test/ppmbrighten.test b/test/ppmbrighten.test
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+#! /bin/bash
+# This script tests: ppmbrighten
+# Also requires:
+
+
+ppmbrighten -v 100 testimg.ppm | cksum
+ppmbrighten -v 100 -normalize testimg.ppm | cksum
+ppmbrighten -s 100 -v -50 testimg.ppm | cksum