Lint load.sh (#883)

Update variable definitions for load.sh

Author: Erazem Kokot

lib/load.sh

@@ -15,44 +15,47 @@
 ### License: GPL v2.0
 ###############################################################
 
+# Shellcheck disable warning about variables being referenced but not assigned.
+# shellcheck disable=2154
+
 cal_rate() {
 
-    case "$connection_rate" in
+    case "${connection_rate}" in
         KB/s)
-            down_sec=$(echo "$download_size*1024/$connection_speed" | bc) ;;
+            down_sec=$(echo "${download_size}*1024/${connection_speed}" | bc) ;;
         MB/s)
-            down_sec=$(echo "$download_size/$connection_speed" | bc) ;;
+            down_sec=$(echo "${download_size}/${connection_speed}" | bc) ;;
         *)
             down_sec="1" ;;
     esac
 
-    down=$(echo "$down_sec/100+$cpu_sleep" | bc)
-    down_min=$(echo "$down*100/60" | bc)
+    down=$(echo "${down_sec}/100+${cpu_sleep}" | bc)
+    down_min=$(echo "${down}*100/60" | bc)
 
-    if ! (<<<$down grep "^[1-9]" &> /dev/null); then
+    if ! (<<<"${down}" grep "^[1-9]" &> /dev/null); then
         down=3
         down_min=5
     fi
 
     export down down_min
-    source "$lang_file"
+    source "${lang_file}"
 
 }
 
 load() {
 
     {	int="1"
-            while ps | grep "$pid" &> /dev/null
+            while ps | grep "${pid}" &> /dev/null
                 do
-                    sleep $pri
-                    echo $int
-                    if [ "$int" -lt "100" ]; then
+                    sleep "${pri}"
+                    echo "${int}"
+                    if [ "${int}" -lt "100" ]; then
                         int=$((int+1))
                     fi
                 done
             echo 100
             sleep 1
-    } | dialog --gauge "$msg" 9 79 0
+    } | dialog --gauge "${msg}" 9 79 0
 
 }
 
@@ -61,21 +64,21 @@ load_log() {
     {	int=1
         pos=1
         pri=$((pri*2))
-        while ps | grep "$pid" &> /dev/null
+        while ps | grep "${pid}" &> /dev/null
             do
                 sleep 0.5
-                if [ "$pos" -eq "$pri" ] && [ "$int" -lt "100" ]; then
+                if [[ "${pos}" -eq "${pri}" ]] && [[ "${int}" -lt "100" ]]; then
                     pos=0
                     int=$((int+1))
                 fi
-                log_msg=$(tail -1 "$log" | sed 's/.pkg.tar.xz//')
-                echo "$int"
-                echo -e "XXX$msg \n \Z1> \Z2$log_msg\Zn\nXXX"
+                log_msg=$(tail -1 "${log}" | sed 's/.pkg.tar.xz//')
+                echo "${int}"
+                echo -e "XXX${msg} \n \Z1> \Z2${log_msg}\Zn\nXXX"
                 pos=$((pos+1))
             done
             echo 100
             sleep 1
-    } | dialog --gauge "$msg" 10 79 0
+    } | dialog --gauge "${msg}" 10 79 0
 
 }