From 96b9dc9b32178f99d9b7a747232289b22f5af6d4 Mon Sep 17 00:00:00 2001
From: Peter Dave Hello <hsu@peterdavehello.org>
Date: Sun, 12 May 2019 19:13:06 +0800
Subject: [PATCH] Remoe unnecessary `$` on arithmetic variables in shell script

---
 unbound.sh | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/unbound.sh b/unbound.sh
index 9467183..c793094 100755
--- a/unbound.sh
+++ b/unbound.sh
@@ -5,16 +5,16 @@ ZONES_DIR="/opt/unbound/etc/unbound/zones"
 
 reserved=12582912
 availableMemory=$((1024 * $( (fgrep MemAvailable /proc/meminfo || fgrep MemTotal /proc/meminfo) | sed 's/[^0-9]//g' ) ))
-if [ $availableMemory -le $(($reserved * 2)) ]; then
+if [ $availableMemory -le $((reserved * 2)) ]; then
     echo "Not enough memory" >&2
     exit 1
 fi
-availableMemory=$(($availableMemory - $reserved))
-msg_cache_size=$(($availableMemory / 3))
-rr_cache_size=$(($availableMemory / 3))
+availableMemory=$((availableMemory - reserved))
+msg_cache_size=$((availableMemory / 3))
+rr_cache_size=$((availableMemory / 3))
 nproc=$(nproc)
 if [ "$nproc" -gt 1 ]; then
-    threads=$(($nproc - 1))
+    threads=$((nproc - 1))
 else
     threads=1
 fi