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-rw-r--r--extras/ide-devfs.sh6
1 files changed, 3 insertions, 3 deletions
diff --git a/extras/ide-devfs.sh b/extras/ide-devfs.sh
index 0a9369dff4..e5bf177f8b 100644
--- a/extras/ide-devfs.sh
+++ b/extras/ide-devfs.sh
@@ -8,7 +8,7 @@ HOST="${2%\.[0-9]}"
TARGET="${2#[0-9]\.}"
if [ -z "${HOST#[13579]}" ]; then
- HOST=`expr ${HOST} - 1`
+ HOST=$((${HOST} - 1))
BUS="1"
else
BUS="0"
@@ -24,7 +24,7 @@ get_dev_number() {
if [ -e "${x}" ]; then
MEDIA=`cat ${x}`
if [ "${MEDIA}" = "$2" ]; then
- num=`expr ${num} + 1`
+ num=$((${num} + 1))
fi
if [ "${x}" = "/proc/ide/${DRIVE}/media" ]; then
break
@@ -32,7 +32,7 @@ get_dev_number() {
fi
done
- echo `expr ${num} - 1`
+ echo $((${num} - 1))
}
if [ -z "$3" ]; then