When you try to use macOS pre-installed vnc, i.e., Finder, to connect to a Raspberry Pi, you will probably encounter an error message:
The software o[……]
Linux
UB、RH、LD、FB……
When the newly flashed Raspberry Pi image is enabled，Chances are you're getting weird apt errors：
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root@raspberrypi:/home/pi# apt install default-jre Reading package lists... Done Building dependency tree... Done Reading state information... Done Package default-jre is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'default-jre' has no installation candidate |
of course，more than this，Installing any package would be Package xxx has no installation candidate
Solution
Check out your first [crayon-67ed6ce[……]
I accidentally found a batch of websites today，Such as http://b6x.net/ Now when you click on this website, it will display "www.logcg.com refused to connect.”，When I clicked on it for the first time, I was stunned...he actually copied my entire website? !
This is a series of three-digit domain name websites，Are similar operations。
Wait a minute，I found out that[……]
Recently I found that the server is very slow every time apt upgrade，The reason，There are still a lot of unused kernels that have to be regenerated every time，Encountered a problem while cleaning up，*Number matching does not take effect，You must manually enter the full kernel name each time to uninstall it。
Found after stepping on the pit，It turned out to be because I used zsh，whereas zsh The default is not supported * No. wildcard! It’s easy to turn on this feature[……]
Python is a good thing，Many times we like to use it to write small things... For example, many services on my server are written in Python ( Supervisor will use your Python program becomes Services ），Accumulate，Many dependency packages are actually used。
but，These Python dependencies will not follow your [crayon-67[……]
Many of my friends are using Flask framework to write a small server，Easy and fast，But also a key to run，Very comfortable。but，If you really want your service to be deployed on the server，Then you will find that there are some homework to do，This article，We mainly talk about how to write the program into a service on the server instead of the terminal in the execution of the command。
If we write a Python web application，[……]
This article originated inR0uter's Blog，ClickView original。
Normal，Speaking of viruses, Trojans，People will probably think of Windows，In fact, as long as the operating system，There will be loopholes，So long as the operating system was used，Then some people will take advantage of this loophole to develop malware (such as viruses, Trojans)。In short，Since the Windows operating system users is far greater than macOS[……]
New out of a lot of people want to try Wireguard，Here VPN over the wall in the end it is appropriate for us to discuss not，Let's look at how fast service from a wireguard on vps。Many people have heard of this service particularly complex to configure，So discouraged，Actually quite simple。
The environment
Here I use the latest ubuntu 18.04.2 To configure，First you have to have a[……]
With the wrong default environment is not terrible，Well matched back like a big deal。
Obviously，He says such things there is no story。
In short，If you find that your vps One day suddenly can not log in，The content is not being given no authority，But the certificate is to determine the right - then you might be wrong with the last exit before the shell。At this time, even if you use the console to log on，After logging will find a flash[……]