Add files via upload

OSX/osx-extended-metadata-attributes-hfsplus.sh

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+#!/bin/bash
+
+# REF: https://apple.stackexchange.com/questions/85699/any-risks-in-creating-custom-os-x-extended-attributes
+# store *sum information along with the file for future backup/comparison
+
+if [ "$1" = "" ]; then
+  outf=metadata-test
+  cd /tmp
+else
+  outf="$1"
+fi
+
+[ "$outf" = "metadata-test" ] && echo "thys be randome texte" >$outf
+#ls -alh $outf
+
+# see ' man xattr '
+# copy the md5sum for the file to its own metadata
+xattr -w md5 $(md5sum $outf |awk '{print $1}') $outf
+
+#79a6a33cf17bf7550486c58836928193  metadata-test
+# ^ md5sum output
+
+#xattr -l $outf
+#md5: 79a6a33cf17bf7550486c58836928193
+
+xattr -w sha1 $(sha1sum $outf |awk '{print $1}') $outf
+
+set -x
+xattr -l $outf
+ls -lh@ $outf
+