From 1a880a38f6df93e6832eb5f29136140a9fcc8bfc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Sommer?= <joerg@jo-so.de>
Date: Wed, 28 Jun 2023 18:00:05 +0200
Subject: [PATCH] rt-tests: Minor code improvements

---
 rt-tests/rt-tests.sh | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/rt-tests/rt-tests.sh b/rt-tests/rt-tests.sh
index 9aabce8..cde7765 100755
--- a/rt-tests/rt-tests.sh
+++ b/rt-tests/rt-tests.sh
@@ -16,8 +16,7 @@ grep -v -e "^#" -e "^$" output | tr " " "\t" >histogram
 cores=$(grep -c ^processor /proc/cpuinfo)
 for i in `seq 1 $cores`
 do
-  column=`expr $i + 1`
-  cut -f1,$column histogram >histogram$i
+  cut -f1,$(( $i + 1 )) histogram >histogram$i
 done
 
 # Create plot command header
@@ -38,7 +37,7 @@ do
   then
     echo -n ", " >>plotcmd
   fi
-  cpuno=`expr $i - 1`
+  cpuno=$(( $i - 1 ))
   if test $cpuno -lt 10
   then
     title=" CPU$cpuno"