Archive for January, 2006

Impor komputer bekas

Friday, January 6th, 2006

Setelah membaca berbagai komentar seputar isu impor komputer bekas, rasanya saya jarang menemukan masukan dari yang pro ide ini.
Jadi, saya coba menyumbangkan beberapa masukan dari perspektif tersebut di komentar di posting ini.

Disclaimer:
Saya tidak ada punya kepentingan apa pun dalam soal impor komputer bekas; kecuali hanya rasa keprihatinan melihat kesenjangan digital yang sangat parah di Indonesia.

FC3: sensors

Thursday, January 5th, 2006

I needed to enable sensors on a server with FC3 (Fedora Core 3) installed. I wasn’t able to find a quick howto, and spent some time figuring out.

From memory, here’s how I did it:

  • yum install lm_sensors
  • sensors-detect
  • service lm_sensors start

Now you should be able to run sensors (by typing sensors). This will show you various information about your server - CPU voltage, temperatures, etc.

Hope it helps.

Awas, security hole paling parah di Windows

Tuesday, January 3rd, 2006

Jika Anda ada membaca berita komputer dalam waktu beberapa hari ini, mungkin Anda sudah membaca berita mengenai masalah dengan format WMF di Windows. Secara singkat, pada suatu file WMF, bisa disisipkan software di dalamnya - ini bisa berupa virus, trojan, dll.
Salah satu berita mengenai hal ini bisa dibaca disini.

Security hole ini mungkin adalah yang paling parah - karena semua versi Windows (yang dirilis sejak tahun 1990) terpengaruh masalah ini.

Salah satu implikasinya adalah, bagi para pengguna Windows 98 / Millennium Edition sebaiknya segera upgrade ke versi yang lebih baru - karena Microsoft tidak akan merilis update untuk versi tersebut. Mungkin NT4 juga posisinya sama, tapi masih perlu saya konfirmasi lagi.

Dan, sampai saat ini Microsoft juga belum merilis update untuk security hole ini. Sehingga ratusan juta komputer di dunia pada saat ini terbuka lebar untuk disusupi oleh virus, hacker, dan para penjahat.

Beberapa tips:
1. Jangan buka gambar yag di attach di email
2. Jangan membuka situs yang tidak jelas bonafiditasnya.
3. Update anti virus Anda lebih sering lagi pada bulan ini.

Sekali lagi hati-hati, dan semoga informasi ini dapat bermanfaat bagi Anda.

[ FAQ dari SANS ]
[ Bahasan dari The Unofficial Microsoft Weblog ]

Tidur yang efisien

Tuesday, January 3rd, 2006

Pernahkah Anda tertidur sebentar (5 - 10 menit), dan kemudian terbangun dalam kondisi sangat segar ? Ternyata, ini ada penjelasan ilmiahnya.

Disitu dijelaskan, bahwa tidur (atau tidur siang) bisa meningkatkan produktifitas pegawai :

Mednick’s most recent research also shows that power naps can lift productivity and mood, lower stress, and improve memory and learning. In fact, Mednick has found through MRIs of nappers that brain activity stays high throughout the day with a nap; without one, it declines as the day wears on. Tell that to the boss next time he finds you passed out at your desk.

Ini sesuai dengan sunnah Rasulullah saw dan para sahabat, dimana beliau biasa melakukan qailulah (tidur siang).
Tapi tidak lama, sekitar setengah jam maksimal. Ini juga cocok dengan waktu “power nap” :

THE ORIGINAL POWER NAP: 20 minutes Includes the benefits of the micro and the mini, but additionally improves muscle memory and clears the brain of useless built-up information, which helps with long-term memory (remembering facts, events, and names).

Disitu juga dijelaskan, bahwa tidur pada sore hari cenderung membuat tubuh kita tidak fit :

Try to nap in the morning or just after lunch; human circadian rhythms make late afternoons a more likely time to fall into deep (slow-wave) sleep, which will leave you groggy.

Kemarin ini saya langsung coba praktek :) lembur 2 hari, yang pertama sampai jam 7 pagi, kedua sampai hampir jam 2 pagi; dan pagi harinya hanya tidur sebentar, sebelum bekerja kembali. Tiap kali mengantuk, dicoba tidur 20 menit saja (power nap). Alhamdulillah, bisa bertahan selama 2 hari kerja rodi itu.
Tapi hari ketiga akhirnya kolaps juga :) tidur normal kembali pada malam harinya (7 jam).

OK, mudah-mudahan artikel ini dapat membantu Anda untuk mengatur jadwal tidur Anda setiap harinya agar menjadi seefisien mungkin.

Timezone problem @ Debian sarge

Monday, January 2nd, 2006

I was working in a Debian sarge server when I noticed that the timezone indicates WIT (Waktu Indonesia Timur). I was confused, because I’m sure that I chose GMT+7 when I setup that server, which should be WIB (Waktu Indonesia Barat).

I ran tzconfig, and indeed it’s GMT+7, but the timezone still shows WIT.

I finally got the explanation here :)
The discussion there is pretty interesting as well.

So it seems to be just a cosmetic bug, nothing serious. Still, it got me confused, he he.
If it caught you too, now you know why it’s like that.

Finally, acknowledgement of UFO from authority

Monday, January 2nd, 2006

Sovyet government is probably the first authority openly admitting the existence of UFO (Unidentified Flying Object).

I knew it was something when I saw it myself back when I was still in high school. In an evening, I was in a road near my school (Al-Azhar, Jakarta), when I noticed a a cylindrical object on the sky. It was red, and it was moving slowly on the sky, before it was gone. It was unlike anything I’ve ever seen.

However, with all the propaganda against UFO, I knew I’d be labeled as fruitcake if I told anyone about it. So I kept my mouth shut until now.

What is a UFO anyway ? There are a lot of people trying to describe what it really is, most of them hypothesizing that they are alien visitors from outer space.
There’s an interesting one - an expert in supernatural activity said that most unexplainable phenomenons are related to jinn (genie). This includes UFO.

For an Indonesian, this makes some sense, since there are still a lot of people here able to get in touch with jinn.
If you ever saw people piercing themselves with blades, walking on fire, or shot by guns; and walk away completely unaffected - they are all cohorts of jinn. I’ve personally played with lesser jinn when I was little. My grandfather saw one. Several of my cousins are able to see them. Several of my friends are unlucky to be disturbed by them, one of them even thrown from upstairs.
There are a so many people here able to interact with them, it’s no longer surprising.

In Islam, we’ve been taught about jinns as well. We’re taught that jinns were created by God as lesser creatures than human. Humans were created to rule the Earth. We’re forbidden from becoming their partner in any activity, since this will increase the status of that particular jinn on their community, and will bring upon God’s wrath on that man/woman.
The jinns are normally invisible, and if they become visible, they’ll also become weakened, enough to even be killed by us.
The jinns are tricksters - I think this is quite well-known even on the West.

Jinns are quite powerful, and they VASTLY outnumber us on Earth. However, God favor us, and protect us from them. If someone got problem from jinns, this is only because God allowed it to happen. The reason varies, sometimes it’s to pay his/her sin here on Earth (instead of paying it in hell later), sometimes it’s to test him/her. When he/she passed the test, his/her status will be raised. Etc.

So know that finally there’s an authority acknowledging UFO, I’m hoping that there will be open-minded discussions on the supernatural phenomenons.
But no fruitcakes please… I’ve seen way too many articles drawing “solid” conclusions from very shaky proof and logic. Let’s keep this rational and open-minded, shall we.