diff --git a/s4-funcs.sh b/s4-funcs.sh
index db58a08..601bda8 100755
--- a/s4-funcs.sh
+++ b/s4-funcs.sh
@@ -358,10 +358,12 @@
   logend
 }
 dbsetup() {
-  [ -d $tmpdir ] || mkdir -m 1777 $tmpdir
+  pipedir=$tmpdir/pipedir
+  [ -d $pipedir ] || mkdir -p -m 1777 $pipedir
   [ -d $dbdir ] || mkdir -m 1775 $dbdir
-  sqi=$tmpdir/sqi.$$
-  sqo=$tmpdir/sqo.$$
+  suf=`date +%s`
+  sqi=$pipedir/sqi-$suf.$$
+  sqo=$pipedir/sqo-$suf.$$
   mkfifo $sqi $sqo
   #tail -f $sqi | sq $db &	# "tail -f" is too heavy. DO NOT USE!!
   sq  $db < $sqi &
@@ -1196,7 +1198,7 @@
 genrandom() {
   # $1=columns (default: 10)
   dd if=/dev/urandom count=1 2>/dev/null|nkf -MB \
-      | tr -d '+='|fold -w${1:-10}|sed -n 10p
+      | tr -d '+=\n'|fold -w${1:-10}|sed -n 10p
 }
 genserial() {
   echo $((($(date +%s)-1433084400)/10))c$$