Starting MySQL on Mac OS X 10.8.4

I used to start MySQL 5.5 (MacPorts) on my Mac using the following command:
$ sudo /opt/local/share/mysql55/support-files/mysql.server start

Yesterday, I found out that this was not working anymore. The error message I was getting was the following:

$ /opt/local/share/mysql55/support-files/mysql.server start
Starting MySQL
. ERROR! The server quit without updating PID file (/opt/local/var/db/mysql55/monastery.local.pid).

It turns out that the new way of starting MySQL is the following:
$ sudo port load mysql56-server

PS. During the process, I have also updated MySQL to version 5.6.

Bad Wifi days are over :)

Bad WiFi connection

Software Update tool

$ sudo softwareupdate -l
Password:
Software Update Tool
Copyright 2002-2010 Apple

No new software available.

type man softwareupdate for more information.

X Window System

My two articles @ MacTech May 2013

Article 1 title: An introduction to sar
Monitoring your Mac’s performance using sar.

Article 2 title: Using email to execute a command

How to make email work for you.

My February 2013 MacTech article

Title: An Introduction to Cacti

Heavy load!

top - 15:00:28 up 74 days, 21:20,  1 user,  load average: 40.33, 36.73, 22.28
Tasks: 175 total,   1 running, 174 sleeping,   0 stopped,   0 zombie

Changing bash shell history size

In order to change the bash shell history size and history file size, I added the following two lines inside .bash_profile file.


HISTSIZE=10000
HISTFILESIZE=10000

CDE screen

SetFile command

If for some reason you cannot see a HD as an icon on your Desktop, run the following command (replace the <Drive Name> with the actual name):


$ SetFile -a v /Volumes/<Drive Name>/

A simple dd test (SSD vs HD)

This is a simple and not scientific benchmark, using the dd UNIX command, that will give you an idea of how faster an SSD than a usual hard disk is.

1TB SATA hard disk

$ dd if=/dev/zero of=bigfile1 bs=10000000 count=512

512+0 records in

512+0 records out

5120000000 bytes transferred in 59.423885 secs (86160640 bytes/sec)

256Gb SATA SSD

$ dd if=/dev/zero of=bigfile1 bs=10000000 count=512

512+0 records in

512+0 records out

5120000000 bytes transferred in 22.594125 secs (226607583 bytes/sec)

The results are impressive!

Installing Xcode command line tools

My MacTech April 2012 articles!

1st article
Title: An introduction to WordPress


2nd article
Title: The find UNIX command

Find Red Hat version from CLI

$ cat /etc/redhat-release

man hier

Type man hier on your terminal and you will get information about the layout of the filesystems.

R.I.P. Dennis Ritchie

How to restart a service in Snow Leopard

The following commands should be executed from the UNIX prompt (as root!)


$ sudo launchctl unload /System/Library/LaunchDaemons/com.apple.syslogd.plist
$ sudo launchctl load /System/Library/LaunchDaemons/com.apple.syslogd.plist

Clearing the DNS cache

$ dscacheutil -flushcache

You will not have to do it regularly but sometimes it is needed.

My 2010 Wish-List

• Buy a CISCO router for home
• Write 2 successful apps for the (Apple) App store
• Find a UNIX Sys Admin job
• Find a job as an iPhone (or maybe iTablet...) developer

check my photography-related wish-list.