JT's Blog

So a few days ago, I wrote a long diatribe about Vonage, Verizon and babbled on a bit about telephones.  I basically started writing because I wanted to slam Vonage, and as I researched links to add to my post, I realized that they really aren’t that bad.  They have their ups and downs like any organization, but they don’t consistently suck like countless horror stories about Verizon support (oxymoron) and shady practices and they’re also not consistently incredible like T-Mobile.

New(er) Vonage Router

Old Vonage Router

So I moved one telephone line (my personal home number) from Vonage to T-Mobile last week.  And I decided that I wanted to move my second Vonage line (home-office) to the now vacated device.  This, because the device that was vacated is newer and the audio quality is much better than the ancient router that I’ve had since 2006 when I first signed up with Vonage.  (Hard to believe that 3 years ago qualifies as “ancient”, but I digress.

The point here is that I called support, got some dude (who spoke very good English) and in 5 minutes it was done!   I can’t believe it!  I expected this to be like pulling teeth or something, but it was actually not bad at all.  Now I feel badly about wanted to say bad things about them.  That being said, I still think Verizon is crap.  If nothing else, it would be the way Verizon sued Vonage for Patent Infringement because of a squatters patent Verizon had on “using the internet to carry telephone service” and billing systems and other stuff.  Clearly, Verizon wanted to put Vonage out of business for doing something that they were either unwilling or incapable of doing.

Here’s an example of a patent squatter being a parasite in our society: Leader Technologies, an Ohio-based “intellectual capital company”, has filed a lawsuit against Facebook. The company claims that Facebook has infringed on one of their patents which relates generally “to a method and system for the management and storage of electronic information.” Sounds like a fairly broad patent which the company simply uses to obtain recurring revenue from large digital companies.

*sigh*

So if you’re not a linux or UNIX geek, you’re probably wondering what on earth this is.  Well, simple enough, Cron is a thing in Linux or UNIX operating systems that will do stuff on a schedule.  Specifically, it can execute a script at a given time on a given day, recurringly.  (Is recurringly a word?)   So Cron is really good for stuff like backups, for example.

I’m writing this post because I’m tired of having to Google the syntax every time I want to edit my Cront settings, so I’ve put it here… so I can search my blog instead 🙂

Bye for now.

*     *   *   *    *  command to be executed
-     -    -    -    –
|     |     |     |     |
|     |     |     |     +—– day of week (0 – 6) (Sunday=0)
|     |     |     +——- month (1 – 12)
|     |     +——— day of month (1 – 31)
|     +———– hour (0 – 23)
+————- min (0 – 59)

Changing the parameter values as below will cause this command to run at different time schedule below :

min	hour	day/month	month	day/week	Execution time
30	0	1	1,6,12	*	— 00:30 Hrs  on 1st of Jan, June & Dec.
:
0	20	*	10	1-5	–8.00 PM every weekday (Mon-Fri) only in Oct.
:
0	0	1,10,15	*	*	— midnight on 1st ,10th & 15th of month
:
5,10	0	10	*	1	— At 12.05,12.10 every Monday & on 10th of every month
:

My friends know that I’ve been a geek for some time.  So much so, in fact, that I made a somewhat decent career out of it.  But I’d like to go back for a moment to the year 2000.   At the time, I was the “new kid” in the IP Engineering group.  I studied and got my MCSE, my CCNA and my mentor, Malcolm, taught me the basics in UNIX.  I learned how the web worked, and set up my first server at home.

Fast forward to a year ago.  I was hosting 79 domains, dedicated Celeron 533 for DNS and my personal e-mail, a PIII500 for hosted mail (RedHat 9), PII350 for Apache (RedHat 7.3), a file server (PIII600 win2k), a firewall on a PII350, a desktop and a lot of heat.  Being that I think VMware is the greatest thing since sliced bread (and I teach the stuff professionally,) it was time to put my money where my mouth was.  I bought an HP XW6200 on eBay for about $400 and built out an ESX server.  Granted, these workstations are not on the VMware HCL for ESX for a number of reasons (the least of which is lack of redundancy and it has SATA controllers), but after a few BIOS tweaks, it’s rock solid.  For the money, you can’t beat it.  There are a lot of them coming off lease right now so it’s time to pounce if you want one.

Moving forward to this post, I’ve virtualized the entire shebang. No redundancy, but hey, it’s not like there was any before!  So now I’ve decommissioned all these old machines and am getting rid of them (as well as the spare parts I was keeping on hand).   I mean, it’s not like this equipment can run Vista (or for that matter, OSX or Ubuntu.)

Inwin Case.  When it ran RedHat 6.2 with no GUI, it was a Celeron 533 with 128MB RAM and two 3com NICs.  For its new life as WinXP, the CPU was changed to a PIII 500, 512MB RAM, a single Netgear NIC, a sound card and an ATI Rage AGP adapter.

This is what prompted me to write this post.  I just built my old faithful RedHat 6.2 server with over 3600 days of service into a WindozeXP machine that I’m passing forward to a friend (There was extensive vacuuming btw.)  .  It’s not fast, but it’s got VLC, Open Office, Firefox and AVG.  Hopefully it will help some young kids get their feet wet.  It’s a bittersweet farewell to that old beast.

If you’re a geek like me, you probably see a qwerty keyboard on a cellphone as something you should have copyrighted back in the 90s so you could be living in a yacht in the Carribbean right now.  Well, we missed out.  At any rate, the point of this post is because I’m now a Blackberry Curve fan (with WiFi and the UMA offered by TMobile) and I have this old Treo650 that’s been collecting dust.  It was faithful and tweakable (allbeit unreliable by poweruser standards).   A friend of mine was in need of a phone and I offered up the old Treo… offer accepted.

It’s easy to wipe the Treo memory, but how do you wipe it so it can’t be recovered by someone with crafty tools?  I admit, while writing this post I googled for about 60 seconds looking for such utilities and didn’t find any.  But I’m sure with a little effort and patience, I could.  There have been several articles on the subject from reputable sources like this one in the Washington Post.  Here’s an excerpt:

[some dude] buys about 300 used cellphones each year from eBay and other sites for training sessions. Though the sellers think they have wiped the devices clean, 80 to 85 percent of the devices still have data intact, Schroader said.

“We’ve recovered everything from complete address books . . . to pictures taken in intimate moments. It’s like, well, I didn’t need to see that,” Schroader said.

The fact that cellphones can give up secrets makes them as valuable to law enforcement as to criminals.

Not that I didn’t trust the friend to whom I am hand-me-down’ing the phone, but hey, how do you securely wipe a Treo650?  Seaching Google only yielded the “factory reset” which is dramatically insufficient.  So once I found the instructions, I figured I’d post them in my blog to help anyone out there who may be trying to do the same.

It’s called the Zero Out Reset.

Go to the Palm website and search for solution ID: 887 in the Knowledge Library entitled: Zero Out Reset.

This procedure will reformat the 650’s internal memory:

• Connect the HotSync cable (it does not need to be connected to your PC or power).
• Press and hold the Power button, the Up on the 5-way navigator and the HotSync button, and then simultaneously press and release the RESET button (using the stylus in your mouth if doing it by yourself). Then release the other three buttons.
• The screen will go blank and appear to be dead for up to ten minutes while your internal memory is being reformatted. Your 650 will then “wake up” and the PalmOne and palm POWERED logos will appear. You will then be prompted to calibrate the touchscreen and set the date & time.

The bottom line: if you merely do a hard reset, the data can be recovered using inexpensive software.

So I’m a recent MAC convert. One of the reasons is that it’s a native UNIX operating system, which means if you’re not too squeamish about using the command line, you can do most anything without having to “buy” software. In this case, using the command “dd” to create iso images…

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