Added photos scripts.

Convention photos/lowext

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+checkcommand()
+{
+    local result
+    local command="$1"
+    which "$command" 1>/dev/null 2>&1
+    if [[ $? == 0 ]]; then
+        echo "$command requirement OK"
+        result=1
+    else
+        echo "$command requirement MISSING"
+        result=0
+    fi
+    return $result
+}
+
+# main
+if [[ "$1" == "-h" ]]; then
+    echo "The lowext command lowercases JPG file extensions in the current directory not recursively."
+else
+    checkcommand rename
+    if [[ $? == 1 ]]; then
+        uppercaseCount=$(find -maxdepth 1 -name '*.JPG' | wc -l)
+        if [[ $uppercaseCount > 0 ]]; then
+            rename 's/JPG/jpg/' *.JPG
+        fi
+        echo ".JPG -> .jpg: $uppercaseCount"
+    fi
+fi

Convention photos/tphoto

@@ -1,41 +1,78 @@
 #!/bin/bash
 
-function checkJhead()
+checkcommand()
 {
     local result
-    local check=$(which ant)
-    if [[ "$check" =~ ^/.* ]]; then
-        echo "jhead requirement OK"
+    local command="$1"
+    which "$command" 1>/dev/null 2>&1
+    if [[ $? == 0 ]]; then
+        echo "$command requirement OK"
         result=1
     else
-        echo "jhead requirement MISSING"
+        echo "$command requirement MISSING"
         result=0
     fi
     return $result
 }
 
-# main
+help()
+{
+    echo "Usage:"
+    echo "    tphoto -h              Display help."
+    echo "    tphoto                 Rename jpg files from current directory with Exif datetime."
+    echo "    tphoto *.jpg           Rename files in parameter with Exif datetime."
+    echo "    tphoto -f              Rename jpg files from current directory with Exif datetime or file datetime."
+    echo "    tphoto -f *.jpg        Rename files in parameter with Exif datetime or file datetime."
+}
 
-# Lowercase extension.
-uppercaseCount=$(find -maxdepth 1 -name '*.JPG' | wc -l)
-if [[ $uppercaseCount > 0 ]]; then
-   rename 's/JPG/jpg/' *.JPG
-fi
-echo ".JPG -> .jpg: $uppercaseCount"
-
-# Rename.
-checkJhead
-if [[ $? == 1 ]]; then
-    count=0
-    for filename in $(ls *.jpg); do
-        #echo "==== $filename"
-        if [[ $(jhead $filename | grep Date) =~ ^Date.* ]]; then
-           #echo "yop $filename"
-           jhead -n%Y%m%d-%H%M%S "$filename"
-           let "count+=1"
+renameFromDirectoryWithExifOnly()
+{
+    find . -maxdepth 1 -type f -iname "*.jpg" | while read path
+    do
+        filename=$(basename $path)
+        #echo "$filename"
+        if [[ $(jhead $filename | grep -c Date) == 1 ]]; then
+            #echo "yop $filename"
+            jhead -n%Y%m%d-%H%M%S "$filename"
+        else
+            echo "$filename IGNORED"
+        fi
+    done
+}
+
+renameFromDirectory()
+{
+    find . -maxdepth 1 -type f -iname "*.jpg" | while read path
+    do
+        filename=$(basename $path)
+        #echo "$filename"
+        jhead -n%Y%m%d-%H%M%S "$filename"
+    done
+}
+
+
+# main
+if [[ $# == 0 ]]; then
+    renameFromDirectoryWithExifOnly
+elif [[ "$1" == "-h" ]]; then
+    help
+elif [[ "$1" == "-f" && $# == 1 ]]; then
+    renameFromDirectory
+elif [[ "$1" == "-f" && $# > 1 ]]; then
+    for filename do
+        if [[ "$filename" != "-f" ]]; then
+            #echo "$filename"
+            jhead -n%Y%m%d-%H%M%S "$filename"
         fi
     done
-    echo "Renamed: $count"
 else
-    echo "KO"
+    for filename do
+        #echo "$filename"
+        if [[ $(jhead $filename | grep -c Date) == 1 ]]; then
+            #echo "yop $filename"
+            jhead -n%Y%m%d-%H%M%S "$filename"
+        else
+            echo "$filename IGNORED"
+        fi
+    done
 fi