[WIP] shellcheck linting

usr/local/share/bastille/export.sh

@@ -371,7 +371,7 @@ jail_export() {
     else
         if [ -z "${USER_EXPORT}" ]; then
             # Generate container checksum file
-            cd "${bastille_backupsdir}"
+            cd "${bastille_backupsdir}" || error_exit "Failed to change directory."
             sha256 -q "${TARGET}_${DATE}${FILE_EXT}" > "${TARGET}_${DATE}.sha256"
             info "Exported '${bastille_backupsdir}/${TARGET}_${DATE}${FILE_EXT}' successfully."
         fi

usr/local/share/bastille/list.sh

@@ -203,6 +203,7 @@ list_limit(){
 }
 
 list_import(){
+    # shellcheck disable=SC2010
     ls "${bastille_backupsdir}" | grep -v ".sha256$"
 }