diff -Nur rootsh-1.5.3.orig/src/rootsh.c rootsh-1.5.3/src/rootsh.c
--- rootsh-1.5.3.orig/src/rootsh.c  2017-11-11 19:18:16.638430603 +0800
+++ rootsh-1.5.3/src/rootsh.c   2017-11-11 19:19:24.547425868 +0800
@@ -680,7 +680,7 @@
     //  Open the logfile 
     */
     if ((logFile = open(logFileName, O_RDWR|O_CREAT|O_SYNC|O_CREAT|O_APPEND|
-        S_IRUSR|S_IWUSR, 0777)) == -1) {
+        S_IRUSR|S_IWUSR, 0666)) == -1) {
       perror(logFileName);
       return(0);
     }