Request grep operate in text mode, even for large blob

This worked for busybox's grep, since it treats all files as text anyway
and ignores the option.

1 files changed, 1 insertions, 1 deletions

diff --git a/sdk.write b/sdk.write
index 4a9703a6..83ed54d4 100755
--- a/sdk.write
+++ b/sdk.write
@@ -178,7 +178,7 @@ extract_rootfs(){
     local selfextractor="$1"
     local target="$2"
     local script_end="$(($(\
-        grep -En -m1 -e '^#+ END OF HEADER SCRIPT #+$' "$selfextractor" |
+        grep -aEn -m1 -e '^#+ END OF HEADER SCRIPT #+$' "$selfextractor" |
             cut -d: -f1) + 1 ))"
     mkdir -p "$target"
     tail -n +"$script_end" "$selfextractor" | tar -xj -C "$target" .