No Znx!

This is a really simple script that can be used to backup all the databases in a MySQL server. Thought I’d put it here as it shows some basic scripting techniques that maybe will help people see how to write scripts. Basically all this does is save me from having to type out the date. It could be automated but that would require storing the user name and password somewhere which normally isn’t too smart an idea.

#!/bin/sh
# GNU GPL version 3.0 or above
# Copyright (c) 2009 Mark Sangster
 
if [ -z "$3" ]; then
  echo 'mybackup <user> <password> <host>' >&2
  exit 1
fi
 
MYUSER=$1; MYPASS=$2; MYHOST=$3
 
mysqldump -u $MYUSER -p $MYPASS -h $MYHOST -A | \
  bzip2 -9 > mysql-`date +%Y-%m-%d`.bz2

The script usage is very striaght-forward:

# mybackup user pass host

At which point you will find a file called “mysql-2009-01-27.bz2″ or similar.  Nothing to difficult!