1 files changed, 28 insertions, 0 deletions
diff --git a/check-diff b/check-diff
new file mode 100755
index 0000000..8643e04
--- /dev/null
+++ b/check-diff
@@ -0,0 +1,28 @@
+#!/bin/sh
+
+a="$1"
+aDat="$(
+  echo "${a}" | \
+    tr '/' '\n' | \
+    grep -m1 '^[0-9]\{4\}\(_[0-9]\{2\}\)\{2\}$'
+)"
+dir="$(
+  echo "${a}" | \
+    sed "s|/${aDat}/.*$||"
+)"
+bDat="$(
+  ls -1 "${dir}" | \
+    grep -v "^${aDat}\$" | \
+    grep '^[0-9]\{4\}\(_[0-9]\{2\}\)\{2\}$' | \
+    sort | \
+    tail -n1
+)"
+b="$(
+  echo "${a}" | \
+    sed "s|/2016_12_[0-9][0-9]/|/${bDat}/|"
+)"
+
+(diff -q "$a" "$b" 2> /dev/null > /dev/null) \
+  && [ "$(stat "$a" -c'%h')" -lt 64000 ] \
+  && [ "$(stat "$b" -c'%h')" -lt 64000 ] \
+  && echo "'$a' equals '$b'"