Basically it uses rsync and cp to create a backup, but only changed files are actually copied; unchanged files are simply linked to. This saves a lot of disk space, and allows you to keep many backups on the system at one time, assuming most of your files don't change.
Great Papers in Computer Science edited by Phillip A. Laplante collects a lot of classic papers in one volume. Unfortunately, the book was put together a bit too quickly, with the result of many typos. (Laplante talks about that in the Amazon.com comments for the book.) However, I still find it to be a useful collection.
I remember reading this story in Wired some years ago about electric vehicle drag racing. The article talks about the National Electric Drag Racing Association (NEDRA), among other things.
Some of these cars are what you think of when you think of drag racing; some of them aren't, like this street legal 1972 Datsun 1200 "White Zombie" mentioned in the Wired story. Some people build electric motorcycles too; check out the KillaCycle .
I use the features of voice-over-IP provider VoicePulse to accomplish what you are talking about. I know that you can't get VoicePulse in Canada, but maybe there are other VoIP providers there that I don't know about, who offer similar features. You sign up with them, and they send you a preconfigured Cisco ATA-186 to hook up to your broadband connection. You plug a telephone into the Cisco ATA to use it.
You can then set up anonymous call blocking so that callers without caller ID don't get through. You can optionally set it up to allow anonymous callers if they enter their phone number after prompted, which then gets sent to your caller ID as ??1234567890?? to indicate that the call was originally anonymous.
They also have "Telemarketer Block", which I assume is the same kind of thing the Telezapper does. I should probably turn it on, but I thought it might be annoying to callers.
You can also use their Do Not Disturb feature in combination with their Filter feature to send most callers immediately to voice mail, but allow your family to ring through. You do this by activating the Do Not Disturb feature, and then setting a filter for each family member's telephone number with the filter action set to "Always Ring" (the filter overrides the Do Not Disturb).
The filters are cool, you can set them up for individual callers with actions of "Always Forward", "Always Ring", "Always Voicemail", "Always Busy", or for the truly annoying, "Not In Service", which plays a "not in service" message. One final option they don't list in their promo materials, but appears on the Filter setup page when I am logged in to my account, is "Rejection Hotline". It supposedly plays a "humorous message provided by the Rejection Hotline." I haven't tried this option yet, so I don't know how lame it is, but I can guess...
It will scan your hard drive to look for different kinds of files (JPEGs, Word, Excel, whatever) and let you preview many of these file types before you save them. The scan runs faster if you limit the number of file types that you are searching for.
You might want to look at these instructions on how to make a version that runs from CD, although it involves installing it on a different machine from the one you are trying to recover first, and making the CD on that machine. That way, you can run the software from the CD, and you won't overwrite files on the drive you are trying to recover.
It costs $70, but they let you run a full version of the software for free that does everything except let you save your files. Paying the $70 gives you a registration key to unlock the software so you can save the files it found. So, on the one hand, they are holding your files hostage until you pay; on the other hand, you don't have to pay anything if the software doesn't find anything.
The reason I know about this software is because my friend just formatted her drive by mistake, and she had pictures on it that weren't backed up. I did some searching on Google and found this software. I went over to her place with the CD I made, and it started finding JPEGs. I had to leave before it was done scanning, but it seemed to be finding a lot of files. It didn't seem to have a limit on the number of files you could recover at one time, when I left it was up to about 70 files and counting.
Don't know if you saw this discussion over in the Developers section. Looks like JBoss is finally making a concerted effort to move ahead with certification.
JBoss will be certified long before Apache's J2EE is finished, so Apache won't have the advantage of being the only open-source J2EE implementation.
However, I still think Apache's J2EE does have one big advantage--the Apache license. As others have pointed out, this could mean that we'll see Apache's J2EE code popping up in other vendors' products, ala Apache web server. This could strengthen Apache's position in the business world in a way that JBoss can't compete with.
The linked article doesn't mention it, but the SVCD (Super Video CD) format was created in 1998 for the same reasons. Here is a good overview of why and how SVCD was created (some excerpts follow...)
Super Video CD (aka SVCD, Super VCD or Chaoji VCD) is an enhancement to Video CD that was developed by a Chinese government-backed committee of manufacturers and researchers, partly to sidestep DVD technology royalties and partly to create pressure for lower DVD player and disc prices in China. The final SVCD spec, set by the China National Committee of Recording Standards, was announced in September 1998, winning out over C-Cube's China Video Disc (CVD) and HQ-VCD (from the developers of the original Video CD).
As always, the background story is a bit more complicated than how it appears in brief summaries like the above. First of all, why was there such a big interest in creating a new CD-based video disc format for China, at the time when the rest of the world was already preparing to accept DVD as the "next generation" digital video delivery format?
It all comes down to the following three reasons:
The prevailing success of the original (White Book) Video CD format...
The political objectives of the Chinese government...
From an old press release, it looks like they are sending the machines to Envirocycle, an electronic recycler--maybe it is possible to send stuff to them directly, but I didn't see anything like that on their site.
I agree with you 100%. I just wanted to mention (even though you probably already know this), that the police in the U.S. can't (legally) use an IR camera to watch you through your walls without getting a search warrant first. Mere suspicion doesn't cut it anymore. A 5-4 ruling by the Supreme Court decided this on June 11, 2001.
Of course, if you are "suspected of being a terrorist supporting drug user" as you say, then getting a warrant these days is probably not too difficult...
Slashdot Mirror
You might want to take a look at Easy Automated Snapshot-Style Backups with Linux and Rsync posted by Mike Rubel. I think this is mentioned in the book Linux Server Hacks by O'Reilly (hack #42), although I don't have the book so I'm not sure.
Basically it uses rsync and cp to create a backup, but only changed files are actually copied; unchanged files are simply linked to. This saves a lot of disk space, and allows you to keep many backups on the system at one time, assuming most of your files don't change.
Great Papers in Computer Science edited by Phillip A. Laplante collects a lot of classic papers in one volume. Unfortunately, the book was put together a bit too quickly, with the result of many typos. (Laplante talks about that in the Amazon.com comments for the book.) However, I still find it to be a useful collection.
DoCoMos Finger Phone
On October 11th, 2000 with 164 comments
I remember reading this story in Wired some years ago about electric vehicle drag racing. The article talks about the National Electric Drag Racing Association (NEDRA), among other things.
Some of these cars are what you think of when you think of drag racing; some of them aren't, like this street legal 1972 Datsun 1200 "White Zombie" mentioned in the Wired story. Some people build electric motorcycles too; check out the KillaCycle .
I use the features of voice-over-IP provider VoicePulse to accomplish what you are talking about. I know that you can't get VoicePulse in Canada, but maybe there are other VoIP providers there that I don't know about, who offer similar features. You sign up with them, and they send you a preconfigured Cisco ATA-186 to hook up to your broadband connection. You plug a telephone into the Cisco ATA to use it.
You can then set up anonymous call blocking so that callers without caller ID don't get through. You can optionally set it up to allow anonymous callers if they enter their phone number after prompted, which then gets sent to your caller ID as ??1234567890?? to indicate that the call was originally anonymous.
They also have "Telemarketer Block", which I assume is the same kind of thing the Telezapper does. I should probably turn it on, but I thought it might be annoying to callers.
You can also use their Do Not Disturb feature in combination with their Filter feature to send most callers immediately to voice mail, but allow your family to ring through. You do this by activating the Do Not Disturb feature, and then setting a filter for each family member's telephone number with the filter action set to "Always Ring" (the filter overrides the Do Not Disturb).
The filters are cool, you can set them up for individual callers with actions of "Always Forward", "Always Ring", "Always Voicemail", "Always Busy", or for the truly annoying, "Not In Service", which plays a "not in service" message. One final option they don't list in their promo materials, but appears on the Filter setup page when I am logged in to my account, is "Rejection Hotline". It supposedly plays a "humorous message provided by the Rejection Hotline." I haven't tried this option yet, so I don't know how lame it is, but I can guess...
Take a look at RecoverMyFiles. There is also a review at ZDNet Australia (RecoverMyFiles.com is based in Australia).
It will scan your hard drive to look for different kinds of files (JPEGs, Word, Excel, whatever) and let you preview many of these file types before you save them. The scan runs faster if you limit the number of file types that you are searching for.
You might want to look at these instructions on how to make a version that runs from CD, although it involves installing it on a different machine from the one you are trying to recover first, and making the CD on that machine. That way, you can run the software from the CD, and you won't overwrite files on the drive you are trying to recover.
It costs $70, but they let you run a full version of the software for free that does everything except let you save your files. Paying the $70 gives you a registration key to unlock the software so you can save the files it found. So, on the one hand, they are holding your files hostage until you pay; on the other hand, you don't have to pay anything if the software doesn't find anything.
The reason I know about this software is because my friend just formatted her drive by mistake, and she had pictures on it that weren't backed up. I did some searching on Google and found this software. I went over to her place with the CD I made, and it started finding JPEGs. I had to leave before it was done scanning, but it seemed to be finding a lot of files. It didn't seem to have a limit on the number of files you could recover at one time, when I left it was up to about 70 files and counting.
Don't know if you saw this discussion over in the Developers section. Looks like JBoss is finally making a concerted effort to move ahead with certification.
JBoss will be certified long before Apache's J2EE is finished, so Apache won't have the advantage of being the only open-source J2EE implementation.
However, I still think Apache's J2EE does have one big advantage--the Apache license. As others have pointed out, this could mean that we'll see Apache's J2EE code popping up in other vendors' products, ala Apache web server. This could strengthen Apache's position in the business world in a way that JBoss can't compete with.
The linked article doesn't mention it, but the SVCD (Super Video CD) format was created in 1998 for the same reasons. Here is a good overview of why and how SVCD was created (some excerpts follow...)
Super Video CD (aka SVCD, Super VCD or Chaoji VCD) is an enhancement to Video CD that was developed by a Chinese government-backed committee of manufacturers and researchers, partly to sidestep DVD technology royalties and partly to create pressure for lower DVD player and disc prices in China. The final SVCD spec, set by the China National Committee of Recording Standards, was announced in September 1998, winning out over C-Cube's China Video Disc (CVD) and HQ-VCD (from the developers of the original Video CD).
As always, the background story is a bit more complicated than how it appears in brief summaries like the above. First of all, why was there such a big interest in creating a new CD-based video disc format for China, at the time when the rest of the world was already preparing to accept DVD as the "next generation" digital video delivery format?
It all comes down to the following three reasons:
I remember IBM offering something like this for IBM or non-IBM machines, and I found a link:
IBM PC Recycling Service for $29.99
Here's the link in their store:
IBM PC Recycle / Recycling Service
From an old press release, it looks like they are sending the machines to Envirocycle, an electronic recycler--maybe it is possible to send stuff to them directly, but I didn't see anything like that on their site.
I agree with you 100%. I just wanted to mention (even though you probably already know this), that the police in the U.S. can't (legally) use an IR camera to watch you through your walls without getting a search warrant first. Mere suspicion doesn't cut it anymore. A 5-4 ruling by the Supreme Court decided this on June 11, 2001.
Of course, if you are "suspected of being a terrorist supporting drug user" as you say, then getting a warrant these days is probably not too difficult...
Can't Scan Without a Warrant