1 files changed, 22 insertions, 0 deletions
diff --git a/shasum b/shasum
new file mode 100755
index 0000000..18efefd
--- /dev/null
+++ b/shasum
@@ -0,0 +1,22 @@
+#!/bin/sh
+
+for i in "$@"; do
+  case $i in
+    "-a") BITS="y"
+      continue
+      ;;
+    *)
+      ARGS="$i "
+      ;;
+  esac
+  if [ -n "$BITS" ]; then
+    case $i in
+      256|512)
+        PROGRAM="sha"$i"sum"
+        ;;
+    esac
+    unset BITS
+  fi
+done
+cat - | "$PROGRAM" $ARGS
+echo "$PROGRAM $ARGS"