Search and Replace in SSH

Getting a lot of exposure in Linux environments lately.

Used “top” to see running processes, “tail -f access_log” to watch accesses to my websites. Updated the iptable to block access from a specific IP address that’s been making requests to wpad.dat on one of my servers.

And now, running a long command to update the MySQL username and password details in .php files for a website with many subdomains.

I don’t have the patience to go through every subdomain in an FTP client to update those details so I googled a bit and requested root access to the server and ran:

find . -name \*.php -type f -exec sed -i ‘s/\$MYSQL_PASSWORD = \”oldpassword\”/\$MYSQL_PASSWORD = \”newpassword\”/g’ {} +

It’s probably not the best way but it’s the only way I can find at the moment.

What it does is to go through all files and folders, and their subfolders in the current directory (I’ve already navigated my way to the www/ dir), look for files with the .php extension, and execute the sed command on those files.

The sed command then looks for the string $MYSQL_PASSWORD = “oldpassword” and replaces it with the new string $MYSQL_PASSWORD = “newpassword”. I could omit the $MYSQL_PASSWORD string but the previous person in charge had used the same string for the username and password.

The first time I ran the command to update the username, I did not specify a file extension and the command took about 10 minutes to finish. It was then I found out that there were log files that are about 1.6GBs in size.

The second time I ran it, I specified .php and it finished in less than a minute.

That was fun.

Finally bought an SSD

I’ve been wanting one for a long time. But the prices were too high at that time. Now that the Intel 320 series, 120GB SSD costs $315, I grabbed one quickly.

I’ve been on RAID 0 for a few years. Using 2 WD Raptors 36GB 10k RPM. Which gives me 72GB as my C drive.

After installing the OS, FFXI, I’m only left with a little bit of space for 1 or 2 more games. And games nowadays take up many gigs of space.

Which is why if I ever want to get an SSD, it will have to be at least 120GB. Back then, you’d need to pay SGD400~500 for such an SSD.

Right now, I’m restoring Windows 7 over the network. I bought an Ultimate edition because someone was selling it cheap. This edition allowed me to backup over the network to another computer which I have running 24/7.

Here’s a few things I learned today.

When I set my motherboard’s SATA ports to RAID mode, there was an extra long delay as the motherboard detects the drives at each bootup. Now that I’m on a single SSD, no reason to use RAID mode anymore. So I set my SATA ports to AHCI.

My DVD rom uses SATA, and I wasn’t able to boot up through it. This is when I learned that you need to set it to IDE mode if you want to access your SATA DVD rom drive outside of the OS.

So I finally got to boot up Windows 7 from the DVD. Selected repair, and after a few dialog boxes, I was able to access the shared folder on my other computer which contains my system image and backups.

Not sure if I missed out anything, when Windows 7 started up the network, it connected to my network in 100mbps mode and not 1gbps. Thus, the restoration process is taking a long time. :(

I bought a new PSU last night too. A CoolerMaster Silent Pro Gold 600W, for the 80+ Gold rating in efficieny. This is for my 24/7 computer in hopes of cutting down the electricity consumption.


After the restoration was done, Windows 7 would crash on bootup if the SATA port is set to AHCI.

I set the SATA port to IDE and it booted up fine. Then googled around and found this fix:

1. Startup “Regedit
2. Open HKEY_LOCAL_MACHINE / SYSTEM / CurrentControlset / Services
3. Open msahci
4. In the right field left click on “start” and go to Modify
5. In the value Data field enter “0” and click “ok”
6. exit “Regedit”
7. Reboot Rig and enter BIOS (hold “Delete” key while Booting



Peeping tom!?

I’ve never felt the lust for more money until earlier this year.

Now, I’m looking all over the place for ways to earn more money.

I could use my savings to buy a condominium and rent it out, using the collected rent to pay off the bank loans for the condo. But current condo prices are too high and even when combined with my mum’s savings, we don’t have enough for a decent unit at a decent location.

Later this year, some government policy might affect condo prices, and with the recent increase in flat supply from the government, we might see prices going down.

I ended up tossing the idea of buying a property in Australia because I’m not comfortable with not being able to “see” the actual property and have worries of being scammed.

I’m also thinking of setting up a company on my own, providing web solutions, customized web applications, running on a subscription-based business model. SaaS.

Just today, I woke up at 5am and couldn’t get back to sleep.

So while lying down on my bed, I kept thinking of money-making ideas and ended up with an idea for a phone app to organize my manga collection. A bit of research reveals that there are some apps already doing the same thing but they either have a crappy interface or not as convenient as what I have in mind.

There are so many ways to make money. Just need to put in lots of hard work.