Of course the true answer is that he came up with the correct answer, exactly because he just chose a "random" one, just as Arthur Dent when drawing Scrabble letters. So since now we already have a clue about what that 42 might mean, so beware of Thursdays.:-)
Well, since Einstein's General Relativiy, we are already past the Newtonian approximation of gravity. Compare with the electromagnetic case: You can't explain the magnetic force in terms of the electric force by just assuming the charges are changed. Newtonian gravitation is for gravity what Coulomb attraction is for the electromagnetic force: It's just an approximation for sufficiently slow moving sources (well, in the case of gravitation, there's an additional limitation that the fields may not be too strong either for the Newtonian theory to work).
Build 5308 is feature complete, and has not crashed even once. It supports all the devices on my machine. Now why the hell would they rewrite 60% of a perfectly well running system??? Microsoft has said that most of the work remaining is related to security and performance. I trust them, because I have seen it.
Maybe it runs too well, thus giving too little incentive to upgrade later. Therefore about 60% of the code will be rewritten in order to decrease security and performance.;-)
Always add gaming programmers late in the project and to improve security and reliability.
Of course. For example, the programmers of FPS games are likely good at writing AI which fights against the user. Just the thing you need for a secure OS, because you know, the biggest security problem often sits in front of the screen.
Surely that's why bird feathers crash into earth regularly;-) Galilei's result only holds if there's no air, or if air resistance can be neglected. When taking air resistance into account, the speed goes aup to a final value which depends, beside others, on the weight. In air, heavier things indeed fall faster.
Not to mention that the GP post was a joke anyway, which makes your comment a bit besides the point.
However, storing data in them can be a lot of effort (there are special institutions to help with that, called schools), and they are known to lose data every now and then. Moreover, there's often quite a bit lateny in reading data, and in some cases even repeated requests might not suffice to get at the data at all. The data reading speed isn't too fast either, and the writing speed is truly horrible. Moreover, they need years to completely start up (although some data can already be written and read during startup time), and they can't be switched off when you don't need them, because they won't restart again. Also, while they have a sleep mode, you cannot simply activate that. Usually it will only work at certain times, and even then they may refuse to go to sleep for quite some time. It seems, however, that many of them can be sent to sleep mode in the evening by sending them special large data streams (so-called bedtime stories). OTOH they must stay in sleep mode for quite some time to function properly, so don't even think of using them in a 24/7 application (although you have to prepare to support them 24/7, since sometimes they spontaneously end their sleep mode at unexpected times, and in that case they tend to demand for immediate maintenance).
All in all, they are not really a good replacement for a hard disk.
This is of course only true for file systems which cannot allocate partial blocks.
Of course one effect of the new sector size will be that old filesystem drivers, esp. those which come with old OSs, will likely not be able to use those disks. Which in effect means that if you want to use such a disk, you absolutely will have to upgrade your OS.
It'd be nice if this had a distinctive window border. It's possible with fvwm I think.
An alternative would be to change the background.
On an xterm, you can use e.g. the bash command echo -e '\e]11;pink\a' to set the background color of the window to pink. Indeed, you could add the escape sequence to the root command prompt, and another switching back to your normal background color to the normal user command prompt. That way the background color will change automatically if you do su (however it will not if you run a command with sudo, except if that command is a bash).
This escape sequence doesn't seem to work on the gnome terminal, however, and screen also eats the control sequence (although IIRC there are ways to pass a control sequence unaltered through screen).
Re:Security Schmecurity.
on
Sudo vs. Root
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· Score: 1
Well, if you want to avoid anyone cracking the root password, the most secure way is to have root log in without a password. After all, if there is no password, no one can crack it!:-)
Re:Same applies to Ubuntu
on
Sudo vs. Root
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· Score: 1
If you disallow remote login for root, you are creating a double barrier for outside attackers:
Crack normal user account, to get into the computer
From normal user account, crack root account
With sudo taking the user password, the second barrier doesn't exist if the first barrier was taken by figuring out the password.
BTW, you can also give the root account a different name, so the root account name will not be known to the attacker either. As bonus, if you see any attempt to login as "root", you are likely looking at a cracking attempt.
Shorter wavelengths are more energetic, so I would expect it takes more energy to transmit light than radio.
You are mixing up the energy of a single photon with the total energy of your transmission. Yes, a single light photon has much more energy than a single microwave photon. But a 100W light source and a 100W radio source both emit exactly the same energy, 100 Joule per second.
No, it will not help. Entanglement cannot be used to communicate faster than light. In quantum teleportation, until you get the classical bits (through the classical, speed of light bound channel), you have a random choice of one of several quantum states, ensuring that any measurement you do will get completely random classical results (or more exactly, just as random as if the other side had done nothing). It's only after you got the classical bits that you can "decode" the quantum state.
Don't forget about data outages, for example when the Sun is blocking the line of sight from Mars to Earth.
This problem could be solved with "interplanetary routers" which just route the signal around the sun (i.e. there's some relay station e.g. at the same orbit around sun as Mars, but at a large enough distance so that if the line of sight to mars is blocked, the line of sight to that station isn't; whenever Mars is behind the sun, the signal is relayed through that station; this gives an additional latency during that time, but probably better than waiting for the end of the block).
If optical interplanetary communication is not only possible, but actually more efficient than radio wave communication, what does that mean for the SETI project which analyses radio waves? Shouldn't we expect extraterrestrical civilisations to switch to optical as soon as possible? Did we perhaps look at the wrong frequency all the time?
Imagine the president patenting any thought connecting himself and any illegal activity... then everyone telling that he does something illegal will violate his patent and receive a cease-and-desist letter!
This web page is truly ugly. It consists of a boring white background with a single line of boring black text, saying "Could not connect: User root has already more than 'max_user_connections' active connections":-)
The merchant SHOULD keep track of the credit card number. They can't print the card number on receipts they give to their customers, but the card number is sometimes the only customer identification they have.
If it is only for identification purposes, they could as well store a cryptographic hash of the credit card number plus other non-changing data on the card. So if the customer wants e.g. a chargeback, you apply the hash to his cc data again and compare. This way the cc number isn't stored and cannot be misused, but you still have the ability to check if the person asking for chargeback is really the same person who originally bought it, and still can search the database for the transaction.
Slashdot Mirror
Of course it isn't prime. It's 6*9, after all.
Of course the true answer is that he came up with the correct answer, exactly because he just chose a "random" one, just as Arthur Dent when drawing Scrabble letters. So since now we already have a clue about what that 42 might mean, so beware of Thursdays. :-)
So that's what happened to the Sun grid? :-)
Well, since Einstein's General Relativiy, we are already past the Newtonian approximation of gravity. Compare with the electromagnetic case: You can't explain the magnetic force in terms of the electric force by just assuming the charges are changed. Newtonian gravitation is for gravity what Coulomb attraction is for the electromagnetic force: It's just an approximation for sufficiently slow moving sources (well, in the case of gravitation, there's an additional limitation that the fields may not be too strong either for the Newtonian theory to work).
Maybe it runs too well, thus giving too little incentive to upgrade later. Therefore about 60% of the code will be rewritten in order to decrease security and performance.
And tomorrow they will apply for a business method patent for this! :-)
Of course. For example, the programmers of FPS games are likely good at writing AI which fights against the user. Just the thing you need for a secure OS, because you know, the biggest security problem often sits in front of the screen.
Surely that's why bird feathers crash into earth regularly ;-)
Galilei's result only holds if there's no air, or if air resistance can be neglected. When taking air resistance into account, the speed goes aup to a final value which depends, beside others, on the weight. In air, heavier things indeed fall faster.
Not to mention that the GP post was a joke anyway, which makes your comment a bit besides the point.
However, storing data in them can be a lot of effort (there are special institutions to help with that, called schools), and they are known to lose data every now and then. Moreover, there's often quite a bit lateny in reading data, and in some cases even repeated requests might not suffice to get at the data at all. The data reading speed isn't too fast either, and the writing speed is truly horrible. Moreover, they need years to completely start up (although some data can already be written and read during startup time), and they can't be switched off when you don't need them, because they won't restart again. Also, while they have a sleep mode, you cannot simply activate that. Usually it will only work at certain times, and even then they may refuse to go to sleep for quite some time. It seems, however, that many of them can be sent to sleep mode in the evening by sending them special large data streams (so-called bedtime stories). OTOH they must stay in sleep mode for quite some time to function properly, so don't even think of using them in a 24/7 application (although you have to prepare to support them 24/7, since sometimes they spontaneously end their sleep mode at unexpected times, and in that case they tend to demand for immediate maintenance).
All in all, they are not really a good replacement for a hard disk.
This is of course only true for file systems which cannot allocate partial blocks.
Of course one effect of the new sector size will be that old filesystem drivers, esp. those which come with old OSs, will likely not be able to use those disks. Which in effect means that if you want to use such a disk, you absolutely will have to upgrade your OS.
Indeed, everyone who ever submitted a comment to slashdot is a copyright holder: He holds the copyright to his slashdot comments.
An alternative would be to change the background.
On an xterm, you can use e.g. the bash command echo -e '\e]11;pink\a' to set the background color of the window to pink. Indeed, you could add the escape sequence to the root command prompt, and another switching back to your normal background color to the normal user command prompt. That way the background color will change automatically if you do su (however it will not if you run a command with sudo, except if that command is a bash).
This escape sequence doesn't seem to work on the gnome terminal, however, and screen also eats the control sequence (although IIRC there are ways to pass a control sequence unaltered through screen).
Well, if you want to avoid anyone cracking the root password, the most secure way is to have root log in without a password. After all, if there is no password, no one can crack it! :-)
With sudo taking the user password, the second barrier doesn't exist if the first barrier was taken by figuring out the password.
BTW, you can also give the root account a different name, so the root account name will not be known to the attacker either. As bonus, if you see any attempt to login as "root", you are likely looking at a cracking attempt.
They need to have an argument for people to migrate to Mars as soon as they have a colony there.
You are mixing up the energy of a single photon with the total energy of your transmission. Yes, a single light photon has much more energy than a single microwave photon. But a 100W light source and a 100W radio source both emit exactly the same energy, 100 Joule per second.
No, it will not help. Entanglement cannot be used to communicate faster than light. In quantum teleportation, until you get the classical bits (through the classical, speed of light bound channel), you have a random choice of one of several quantum states, ensuring that any measurement you do will get completely random classical results (or more exactly, just as random as if the other side had done nothing). It's only after you got the classical bits that you can "decode" the quantum state.
This problem could be solved with "interplanetary routers" which just route the signal around the sun (i.e. there's some relay station e.g. at the same orbit around sun as Mars, but at a large enough distance so that if the line of sight to mars is blocked, the line of sight to that station isn't; whenever Mars is behind the sun, the signal is relayed through that station; this gives an additional latency during that time, but probably better than waiting for the end of the block).
If optical interplanetary communication is not only possible, but actually more efficient than radio wave communication, what does that mean for the SETI project which analyses radio waves? Shouldn't we expect extraterrestrical civilisations to switch to optical as soon as possible? Did we perhaps look at the wrong frequency all the time?
He's payed by Microsoft? Obviously he's not trustworthy! Everyone knows people payed by Microsoft are not trustworthy! :-)
Imagine the president patenting any thought connecting himself and any illegal activity ... then everyone telling that he does something illegal will violate his patent and receive a cease-and-desist letter!
This web page is truly ugly. It consists of a boring white background with a single line of boring black text, saying "Could not connect: User root has already more than 'max_user_connections' active connections" :-)
If it is only for identification purposes, they could as well store a cryptographic hash of the credit card number plus other non-changing data on the card. So if the customer wants e.g. a chargeback, you apply the hash to his cc data again and compare. This way the cc number isn't stored and cannot be misused, but you still have the ability to check if the person asking for chargeback is really the same person who originally bought it, and still can search the database for the transaction.
Paying with jokes? That could get funny!