ensure file size mb at least 1, fix shebang

versions/max_file_size.go

@@ -7,11 +7,14 @@ import (
 )
 
 func getScript() string {
-	return strings.ReplaceAll(script, "{{{MAXSIZE}}}", fmt.Sprint(config.MaxSizeMB<<20))
+	maxSizeMB := config.MaxSizeMB
+	if maxSizeMB == 0 {
+		maxSizeMB = 1
+	}
+	return strings.ReplaceAll(script, "{{{MAXSIZE}}}", fmt.Sprint(maxSizeMB<<20))
 }
 
-const script = `
+const script = `#!/bin/bash
-#!/bin/bash
 function main() {
   local maxsize={{{MAXSIZE}}}
   if [[ "$maxsize" == 0 ]]; then