More EXIF-from-filename setter.

exiffromfn2.sh

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+#!/bin/bash
+# Sets EXIF date from filename yyyymmdd-HHMM.jpg
+for f in *.jpg *.JPG; do
+    if [ "$f" = "*.jpg" -o "$f" = "*.JPG" ]; then
+        continue
+    fi
+    echo "File: $f"
+    DATEPART=${f:0:13}
+    if [ ${#DATEPART} -ne 13 ]; then
+        echo "No date in filename: $f"
+        continue
+    fi
+
+    if ! [[ "$DATEPART" =~ ^(198|199|200|201|202)[0-9]{5}-[0-9]{4}$ ]]; then
+        echo "Not numeric: $DATEPART ($f)"
+        continue
+    fi
+
+    YEAR=${DATEPART:0:4}
+    MONTH=${DATEPART:4:2}
+    DAY=${DATEPART:6:2}
+    HOUR=${DATEPART:9:2}
+    MINUTE=${DATEPART:11:2}
+    SECOND="00"
+
+    DATE="$YEAR:$MONTH:$DAY $HOUR:$MINUTE:$SECOND"
+    exiv2 mo -M "set Exif.Photo.DateTimeOriginal '$DATE'" -M "set Exif.Photo.DateTimeDigitized '$DATE'" $f
+done

exiffromfn3.sh

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+#!/bin/bash
+# Sets EXIF date from filename yymmdd_HHMMSS.jpg
+for f in *.jpg *.JPG; do
+    if [ "$f" = "*.jpg" -o "$f" = "*.JPG" ]; then
+        continue
+    fi
+    echo "File: $f"
+    DATEPART=${f:0:13}
+    if [ ${#DATEPART} -ne 13 ]; then
+        echo "No date in filename: $f"
+        continue
+    fi
+
+    if ! [[ "$DATEPART" =~ ^[0-1][0-9]{5}_[0-9]{6}$ ]]; then
+        echo "Not numeric: $DATEPART ($f)"
+        continue
+    fi
+
+    YEAR="20${DATEPART:0:2}"
+    MONTH=${DATEPART:2:2}
+    DAY=${DATEPART:4:2}
+    HOUR=${DATEPART:7:2}
+    MINUTE=${DATEPART:9:2}
+    SECOND=${DATEPART:11:2}
+
+    DATE="$YEAR:$MONTH:$DAY $HOUR:$MINUTE:$SECOND"
+    exiv2 mo -M "set Exif.Photo.DateTimeOriginal '$DATE'" -M "set Exif.Photo.DateTimeDigitized '$DATE'" $f
+done