看到這一代的青少年人，很多人都擔心，香港早晚會玩完，不但快被深圳、上海超過，而且亦會被內地邊緣化到失去競爭力，很可怕。
要說青少年人出現甚麼問題，可以令得長輩們如此擔心，可以說也說不完，例如自我中心、不
A gotcha with the Bourne shell's set -e and &&
Suppose that you have the following Bourne shell code:
set -ecmd1 && cmd2 && cmd3echo all done
Now suppose that cmd2 exits with a non-zero status. Do you expectthe script to abort, or to print out 'all done'?
My assumption when I was writing a script recently was that the scriptwould abort; after all, I had set -e turned on. But this is not whathappens, and in fact most Bourne shell manpages spell it out
My Workstation (at Work)
Here's an older shot from my previous setup at home (much has changed since then... but most things are the same—in principle! The core tenets of a Geerling computer workstation are:
- Multiple Macs.
- One of the Macs must have at least a 24" display.
- Complexity (like messy cables) should be hidden as much as possible.
- Screen real estate trumps everything else.
External Microphones for iPhone 5s, 5, 4S, iPad and iPod Touch Audio input
Note on iPhone 5 : Right now the only confirmed way to record stereo on the iPhone 5 is with the GuitarJack Model 2 and an Apple 30-pin to lightning adapter. All other headset-jack based solutions work as well as the iPhone 4/4S!
To dramatically increase the quality of the sound you record on your iOS device, you should use an external microphone or mixer, or a direct line input.
You can use
跟蘇格拉底抬槓
朋友在網誌 大數蘇格拉底的不是 ，認為他那句"The unexamined life is not worth living" 錯得交關，我寫了個回應，今天懶惰一點，把那回應改寫一下，貼在這裏：
蘇格拉底那句說話如果死板板地看，當然很容易找到反例說他是錯，但換一個看法，那
蘇格拉底那句說話如果死板板地看，當然很容易找到反例說他是錯，但換一個看法，那
Installing Windows XP from a Microsoft-downloaded .exe file
I recently received a downloaded copy of Windows XP SP3 from Microsoft (I ordered the downloadable file, rather than a mailed CD, for installing on one of my Macs), and noticed that, unlike usual disk images, this file had the extension .exe rather than .iso or .img...
To get it to work with VMWare, I needed to either turn the file into an image, or burn it to a physical CD or DVD. After searching fruitlessly for hours, I finally found a
七月上旬碎語
廣東外語外貿大學的處女比率最低? 也對，學英文就是為了泡鬼，自然要努力開放。我大陸公司的女員工一看見鬼就雙眼閃金光，「肌肉」獻身。不是說什麼。人都是向富的靠，嫁鬼是一個比較快的捷徑。有鬼婆肯收我，我也是
ZFS scrubs and resilvers are not sequential IO
Here is something that is probably not as widely known as it couldbe: ZFS scrubs and resilvers are not done with sequential IO, theway conventional RAID resynchronization and checking is done.
Conventional RAID resyncs run in linear order from the start of eachdisk to the end. This means that they're strictly sequential IO ifthey're left undisturbed by user IO (which is one reason that you candestroy conventional RAID resync performance by doing enough random userIO).
ZFS scrubs and resilvers don't work