The web developer needs a console, but not that much that he/she should drop everything and start reading thick books about Linux. That's why I have learned occasionally some console tricks, and many of my coworkers do the same. I will reveal a few useful secrets without which I cannot live anymore.
1) Use ssh keys!
I discovered the keys a long time, but regularly there are people who never heard about them. SSH keys allow adapting the connection once, and then passwords do not have to be stored to all sites in a notepad.
$ ssh-keygen -t dsa
This article is not a panacea for all security lacks, and it does not reveal any new attack vectors. I just saw a serious implementation of the fake for Google mail and decided to warn all UMumble users.
Recently, I have received an interesting letter, supposedly to confirm / cancel automatic forwarding to my mailbox.
I remember when I was a child I loved playing in the sandbox, and I was lucky too, because my neighbor was a truck driver, who regularly filled the sandbox with the clean river sand. Probably, many of you remember the pleasure of playing with the sand (for example, it is so popular to build the sand castles and sculptures at the beach), therefore, the researchers at the University of California are not exception. Namely, they have created a high-tech sandbox, adding to the normal process of playing with the sand a little augmented reality.
Over a year ago one user of StackOverflow programming site asked for help concerning this issue. Namely, they have the employee with the last name Null at the firm. The problem is that because of his name falls a corporate search application, if the employee’s name will be used as search query (it has happened very often recently). Error:
<faultstring>coldfusion.xml.rpc.CFCInvocationException: [coldfusion.runtime.MissingArgumentException : The SEARCHSTRING parameter to the getFacultyNames function is required but was not passed in.]</faultstring>
A Canadian game developer, Christopher Albeluhn that has seven years of experience lost his job, but he did not lose his optimism. In his spare time he began to make a new project that was supposed to strengthen his portfolio, namely it is a model of the Earth that is powered by the Unreal engine.
I have little experience (summarily I have been working as a programmer nearly for 16 months), nevertheless, I would like to give some tips to myself in the past, or in other words, to those who are studding now at the university and planning to become a software developer. I do not have a claim on wisdom or experience on no account. While thinking a little, I understand that all these tips are very actual for me more than ever too. I published the first note in my blog last year, and now I am publishing here the list expanded with tips of the readers of this blog.
All tips are independent and their order does not matter.
The article will concern the work of “brains”, which operate the engine of your car or motorbike. I will try to explain as simply as possible and in general, what and how is going on.
What do these “brains” do and what are they for? Electronics is an alternative to other systems performing the same functions. The carburetor used to deal with fuel metering, the ignition used to be operated by the mechanical or vacuum advance measure of the ignition advance. In general it can be realized not by electronics alone and it used to be just this way for quite a long time. On the cars, motorbikes, petrol-powered saws, petrol generators and other places worked and keep working the same systems that are to substitute the injector.
Why was it needed to change anything? Why should the existed, proved and rather reliable system be repealed? It is quite simple – a pursuit of economy, ecology and power. Work accuracy of the written above systems is not enough for the supply of the desired level of ecology and powerfulness, electronic systems of the engine controls began to appear long ago.
Today's LCD TVs that are in the medium price ranges often have the mode of expansion rate up to 100-200 Hz due to the technical tricks of picture perception by person.
For example, TrueMotion technology in LG TVs, Motion Plus in Samsung, Perfect Natural Motion in Philips, and RealCinema in Panasonic.
How can we use them properly when connecting to a PC?
Hello, UMumble! Once, I was faced with a choice in the process of developing an authentication system for my project. Namely, what is the best way to store user passwords in the database? Many options came into my head. The most obvious were:
1. Storing the passwords as a plain text in a database.
2. Using regular hashes, such as crc32, md5, and sha1.
3. Using crypt() function.
4. Using the statical salt as type of structure md5(md5($ pass)).
5. Using the unique salt for each user.
The first and second options I had to eliminate for several reasons right away.
"I can send the IP packet to Europe faster than I can send a pixel to the screen. How f’d up is that?" John Carmack asked in his Tweeter. His tweet caused a broad resonance in the community, so Carmack explained that to measure the lag on Sony HMZ-T1 analog display he used a program that changes the contents of the buffer by pressing a button on the controller, and a screen with the video camera 240 fps. Then he counted the number of frames between pressing the button and changing pixel.