From 43f0f899ae4a0134930830fbccf7af614c87c92e Mon Sep 17 00:00:00 2001
From: Gregory Chamberlain <gregc@posteo.net>
Date: Sun, 31 May 2020 21:26:05 +0100
Subject: [PATCH] Fix arithmetic expansions

---
 .local/bin/statusbar/nettraf | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.local/bin/statusbar/nettraf b/.local/bin/statusbar/nettraf
index 42da6d0..fa9eb30 100755
--- a/.local/bin/statusbar/nettraf
+++ b/.local/bin/statusbar/nettraf
@@ -14,12 +14,12 @@ update() {
     sum=0
     for arg; do
         read -r i < "$arg"
-        sum=$(( "$sum" + "$i" ))
+        sum=$(( $sum + $i ))
     done
     cache=${XDG_CACHE_HOME:-$HOME/.cache}/${1##*/}
     [ -f "$cache" ] && read -r old < "$cache" || old=0
     printf %d\\n "$sum" > "$cache"
-    printf %d\\n $(( ("$sum" - "$old") / 1024 ))
+    printf %d\\n $(( ($sum - $old) / 1024 ))
 }
 
 rx=$(update /sys/class/net/[ew]*/statistics/rx_bytes)