Added backup function

CentOS/7-Days-To-Die/7D2D-Manage.bash

@@ -141,6 +141,7 @@ done" C-m
 
 kill_server() {
   local prefix
+  local tmux_response
   local server_id
 
   server_id=""
@@ -281,14 +282,10 @@ update() {
   # Kill the server to ensure a smooth update
   kill_server -s "${server_id}" >/dev/null 2>&1
 
-  local backup_dir
-  local backup_full_path
   local server_directory
   local server_name
   server_name="Server-${server_id}"
   server_directory="${BASE_DIR}/${server_name}"
-  backup_dir="${HOME}/Server-Backups/${server_name}"
-  backup_full_path="${backup_dir}/$(date +%s).tar.gz"
   backup -s "${server_id}"
   log "info" "Updating server $(important "${server_name}") located at $(important "${server_directory}")..."
   steamcmd +force_install_dir "${server_directory}" +login anonymous +app_update 294420 validate +quit
@@ -351,7 +348,6 @@ backup() {
 
   log "info" "Backing up server $(important "${server_name}") to $(important "${backup_full_path}"), this may take a while"
   mkdir -p "${backup_dir}"
-  set -x
   tar cf - "${server_directory}" -P | pv -s "$(du -sb "${server_directory}" | awk '{print $1}')" | \
     gzip > "${backup_full_path}"
   tar -czf "${server_directory}" "${backup_dir}"/
@@ -400,8 +396,7 @@ list_servers() {
       log "error" "An option must be passed for list, check list -h" &&
       return 1
 
-  case "${picked_option}" in
-    1)
+  if (( picked_option == 0 )); then
     log "debug" "Listing running servers"
     local tmux_sessions
     tmux_sessions="$(tmux list-sessions)" >/dev/null 2>&1
@@ -415,14 +410,12 @@ list_servers() {
         important "${running_server}"
       fi
     done <<< "${tmux_sessions}"
-      ;;
-    2)
+  elif (( picked_option == 1 )); then
     log "debug" "Listing installed servers"
     while read -r; do
       important "${BASE_DIR}/${REPLY}"
     done <<< "$(find "${BASE_DIR}" -name "startserver.sh" | cut -d "/" -f5)"
-      ;;
-  esac
+  fi
 }
 
 usage() {