According to this report, 29.7 percent of U.S. mobile subscribers now own smartphones that run full operating systems. Apple and RIM devices are the most popular.
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Home > Archives for CharlyBr
Author Archives: CharlyBr
Starting iPhone development
Saturday, April 10th, 2010
I’ve recently decided to start developing on the iPhone platform. I wanted to share here all links and resources I found to get started. Getting started iPhone Developer Program official page Enroll in the ADP (you need a license to develop and submit your apps) iPhone Development Quick Start (iPhone Dev Center) Learn Objective-C [...]
Doodle Jump
Wednesday, March 17th, 2010
I’m starting a new iPhone category in this blog. The first post is about a game I’ve just installed : Doodle Jump. Be aware, it’s addictive I’ll share here applications I like on iPhone.
Find and remove files
Thursday, February 4th, 2010
I regularly use the find command in scripts to clean directories on my servers. The common way to use find to do this is to write something like: find ./my_dir -name ‘cache-*’ -exec rm -rf \{\} \; It works fine but it always outputs messages like this: find: ./mydir/cache-001: No such file or director which [...]
Enhance your munin load graph
Thursday, December 3rd, 2009
This is the default output of the munin load plugin. I’ve patched it to add a permanent blue line indicating the number of cpu of the server. The resulted graph looks like this : You can download the patched plugin here. It is tested with Linux and FreeBSD.
Optimizing Servers and Processes for Speed with ionice, nice, ulimit
Monday, October 12th, 2009
Just found this very good article about optimizing servers.
Quickly check hosts with ping
Friday, August 14th, 2009
I needed a script for a quick health check of a bunch of servers. This is how I did it using the ping command: for((i=1;i<42;i++)); do ping -c 1 -W 3 host${i}.domain.com &> /dev/null if [ $? -ne 0 ] ; then echo “host${i} is down” else echo “host${i} is up” fi done You can [...]
Set Terminal tab title in Mac OS X
Tuesday, August 11th, 2009
I wrote previously a how-to to set your iTerm tab title. I finally found a tool to do the same thing with the default Mac OS X Terminal. Check it out here, it works perfectly for me! link is dead. On my Mac OS X 10.6.6 and bash (3.2.48(1)-release), you can set your tab title [...]
Set the number of reserved filesystem blocks of a disk
Tuesday, June 30th, 2009
The default value of “Reserved block count” takes 5% of usable disk. On a large fs like 813G, it represents about 40G. These blocks are reserved to the super user to recover from situations where user processes fill up filesystems. It is absolutely safe to reduce this space to one hundred or so MB. check [...]