m5dsum list utility

files/md5sum-update

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+function helpexit() {
+    echo Add more files in md5sum list
+    echo 'Usage: m5sum-update [list name]'
+    echo 'list name is md5sums.txt by default'
+    exit
+}
+
+[[ "$1" = "-h" ]] && helpexit
+list_name="$1"
+[[ -z "$1" ]] && list_name="md5sums.txt"
+
+test -f "$list_name" || touch "$list_name"
+
+for file in *; do
+  if [ $file = $list_name ]; then
+    continue
+  fi
+  if test -d "$file"; then
+    echo $file is a directory
+    continue
+  fi
+  if test -f "$file"; then
+    if grep -q "  $file$" $list_name; then
+      echo "$file already added"
+    else
+      echo "$file adding..." 
+      md5sum "$file" >> "$list_name"
+    fi
+  fi
+done
+
+sort -k 2 -o "$list_name" "$list_name"