Linux, automatically backup MySQL database daily

Backup MySQL database daily using cron job
1) create a bk directory under home directory, in my case /home/jiansen,
cd bk
2) Create a shell scrip MySQLdump.sh
mysqldump  -u root -pmypass mydb | gzip >MySQLDB_`date +"%Y%m%d"`.sql.gz
replace root,  mypass, mydb to your databse username, password and database name
date +"%Y%m%d
is shell comand to produce year, month and day, for example  20140603
example output
 MySQLDB_20140603.sql.gz
3) Create a cron job
 crontab -e
30 23 * * * /home/jiansen/bk/MySQLdump.sh 2>&1>>/home/jiansen/bk/mysqbackup.log
each night  23:30pm run  /home/jiansen/bk/MySQLdump.sh and dump errors
to logfile 
4) to list cron job
  crontab -l
5) To remove cron job
  crontab -r
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