mysqldump not importing all databases - database

Question

I need to import a very large backup pf my database.
I'm using this command for importing all databases:
mysqldump -u root -p --all-databases < localhost.sql
It works, but only 5 db of 6 were imported.
The file has 700'000 lines so is very difficoult select only the last db i care about.
Any advices? Thank you!
EDIT:
Using
mysqldump -u root -p joomla < localhost.sql
got an error
'[root#tp lota]# mysqldump -u root -p joomla < localhost.sql
Enter password:
-- MySQL dump 10.13 Distrib 5.1.69, for redhat-linux-gnu (x86_64)
--
-- Host: localhost Database: joomla
-- ------------------------------------------------------
-- Server version 5.1.69
/*!40101 SET #OLD_CHARACTER_SET_CLIENT=##CHARACTER_SET_CLIENT */;
/*!40101 SET #OLD_CHARACTER_SET_RESULTS=##CHARACTER_SET_RESULTS */;
/*!40101 SET #OLD_COLLATION_CONNECTION=##COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;
/*!40103 SET #OLD_TIME_ZONE=##TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!40014 SET #OLD_UNIQUE_CHECKS=##UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET #OLD_FOREIGN_KEY_CHECKS=##FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET #OLD_SQL_MODE=##SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET #OLD_SQL_NOTES=##SQL_NOTES, SQL_NOTES=0 */;
mysqldump: Got error: 1049: Unknown database 'joomla' when selecting the database'
EDIT #2: the problem was database information_schema inside the dump. After deleting it all went ok. Thank you for your answers.

Answer 1

Rather use mysql (not mysqldump) to import the data:
mysql -u root -p < localhost.sql
mysqldump is for exporting data. Also, you may need to create the (empty) database before importing.

Answer 2

Open Terminal and enter below commands
mysql -u root -p
eg:- mysql -u abcd -p
Check databases that are present
mysql> show databases;
Create a Database if not created before
mysql> create database "Name";
eg:- create database ABCD;
Then Select That New Database "ABCD"
mysql> USE ABCD;
Select the path of SQL file from the machine
mysql> source /home/Desktop/new_file.sql;
Then press enter and wait for some times if it's all executed then
mysql> exit