[hackers] [farbfeld] 2ff: make it more portable || FRIGN

[git]

commit 48c52a1f4889858ae3466f1987b522e426b6ddf3
Author:     FRIGN <d...@frign.de>
AuthorDate: Mon Sep 19 21:47:50 2016 +0200
Commit:     FRIGN <d...@frign.de>
CommitDate: Mon Sep 19 21:47:50 2016 +0200

    2ff: make it more portable
    
    Thanks Roberto and Evan Gates!

diff --git a/2ff b/2ff
index 1b61cef..9a252a9 100755
--- a/2ff
+++ b/2ff
@@ -7,8 +7,8 @@ fi
 TMP=$(mktemp)
 cat > "$TMP"
 
-if [ "$(head -c 8 "$TMP")" = "farbfeld" ]; then
-       cat < "$TMP"
+if [ "$(dd if="$TMP" bs=1 count=8 2>/dev/null)" = "farbfeld" ]; then
+       cat "$TMP"
        exit 0
 fi