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Joomla, Drupal, Compiere, TinyERP, vtigerCRM, Openbravo, GLPI, OOZ Your company must be open to the power of Internet and provide your customer and employees with tools to integrate work and communications,

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Samba, Bind9, DHCP, Apache, OpenSSH, Apache, OpenLDAP, Squid Free software has many users on corporate market. I provide quality solutions for all your needs in servers technology. Free software brings you

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Firewall, FreeBSD, Bastille, Tripwire, IPCop, Untangle, E-Box Give us the oportunity to protect your network against Internet threats with the most efficient software ever created. We implement firewalls, DMZ zones, network

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Home Blog
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Simulate load on linux serve with one-line command

Wednesday, 14 October 2009 09:46
Some days ago I needed a quick way to simulate load on a Linux sever. While there are many tools that can do this, all I needed was a simple bash one-line command that can make the CPUs beg for mercy.
What I ended up using is this: 
dd if=/dev/zero bs=100M | gzip | gzip -d | gzip | gzip -d | gzip | gzip -d > /dev/null & 
Send a few of these to the background and you'll start seeing smoke coming from your server soon.
 

Bash sequences

Monday, 12 October 2009 16:54

A very helpful command I like to use to organize folders is:

for i in {a..z}; do mkdir $i; done

This creates a folder for each letter from "a" to "z".

 

Howto backup and restore MySQL database with character set intact

Wednesday, 18 February 2009 21:47

If you want to preserve characters like ñ, ó, ç, etc. when migrating a MySQL database use mysqldump to export the database with this options:

mysqldump -u root -p --default-character-set latin1 --skip-character-set <dbname> > mydump.mysql

create the target database with:

mysqladmin -u root -p create <dbname> --default-character-set latin1 --collate latin1_swedish_ci

then restore:

mysql -u root -p --default-character-set latin1 <dbname> < mydump.mysql


 



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