Double brackets

src/freedombone-utils-onion

     onion_service_name="$1"
 
     sleep_ctr=0
-    while [ $(onion_service_exists ${onion_service_name}) == "0" ]; do
+    while [[ $(onion_service_exists ${onion_service_name}) == "0" ]]; do
         sleep 1
         sleep_ctr=$((sleep_ctr + 1))
         if [ $sleep_ctr -gt 10 ]; then
 
     wait_for_onion_service_base ${onion_service_name}
 
-    if [ $(onion_service_exists ${onion_service_name}) == "0" ]; then
+    if [[ $(onion_service_exists ${onion_service_name}) == "0" ]]; then
         # try a second time
         onion_update
         wait_for_onion_service_base ${onion_service_name}
     onion_service_port_from=$2
     onion_service_port_to=$3
 
-    if [ $(onion_service_exists ${onion_service_name}) == "1" ]; then
+    if [[ $(onion_service_exists ${onion_service_name}) == "1" ]]; then
         echo $(cat /var/lib/tor/hidden_service_${onion_service_name}/hostname)
         return
     fi
     function_check wait_for_onion_service
     wait_for_onion_service ${onion_service_name}
 
-    if [ $(onion_service_exists ${onion_service_name}) == "0" ]; then
+    if [[ $(onion_service_exists ${onion_service_name}) == "0" ]]; then
         echo $"${onion_service_name} onion site hostname not found"
         exit 76362
     fi