From 324b666c1abab266ad9948c40ac93295ba0ee262 Mon Sep 17 00:00:00 2001
From: Ville Rantanen <ville.rantanen@reaktor.com>
Date: Sun, 25 Feb 2018 21:13:40 +0200
Subject: [PATCH] m5dsum list utility

---
 bin/md5sum-update   |  1 +
 files/md5sum-update | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+)
 create mode 120000 bin/md5sum-update
 create mode 100755 files/md5sum-update

diff --git a/bin/md5sum-update b/bin/md5sum-update
new file mode 120000
index 0000000..e0bfe49
--- /dev/null
+++ b/bin/md5sum-update
@@ -0,0 +1 @@
+../files/md5sum-update
\ No newline at end of file
diff --git a/files/md5sum-update b/files/md5sum-update
new file mode 100755
index 0000000..bf90b55
--- /dev/null
+++ b/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"