diff -r 78e501f6370d -r 8c8aed7e1756 test/bin-test/test-dav-sync-split1.sh
--- a/test/bin-test/test-dav-sync-split1.sh	Sun Jul 02 11:44:09 2023 +0200
+++ b/test/bin-test/test-dav-sync-split1.sh	Sun Jul 02 12:06:45 2023 +0200
@@ -145,7 +145,7 @@
 # test 2: add a large file
 # expected result: split
 
-head -c 1048576 /dev/zero | sed 's/\x0/a/g' > tmp-sync/xa
+head -c 1048576 /dev/zero | tr '\0' 'a' > tmp-sync/xa
 cat tmp-sync/xa | sed 's/a/b/g' > tmp-sync/xb
 cat tmp-sync/xa | sed 's/a/c/g' > tmp-sync/xc
 cat tmp-sync/xa | sed 's/a/1/g' > tmp-sync/x1