Everyone who is interested in astronomy knows that the Quadrant Meteor Shower, the Perseid Meteor Shower and the Gemini Meteor Shower are called the three major meteor showers in the Northern Hemisphere. Last December, I went to see the Gemini meteor shower with my friends, but the moonlight was too strong to see many stars clearly. This time, I finally saw the stars all over the sky, and the number of meteors is also very large! Words are poor, select some obvious ones, as shown above! Last video

AliCloud's free SSL certificate has been used all the time, but I don't know when it will start. The validity period of this certificate has only changed to three months. I have seen many other service providers, and it is the same. I can't stand it after two troubles. I simply use Let's Encrypt's certificate. It's three months anyway, and it can be automatically renewed. After the trouble is over, I send out my notes as a tutorial, which is also a backup [...]

In fact, I have wanted to buy a camera for a long time, and there is no other reason. I just want to play. Over the years, I have taken many photos with my mobile phone, and I have basically understood the professional mode of mobile camera. But I have been stingy all the time. If I don't want to spend this money, I still hold back. Until last year, there was a Fuzhou stop on Huang Shifu's tour. It was my first time to live offline. I was in the front row. It was the first time [...]

Before I knew it, Yinlin had also heard about it for more than 10 years. After Huang Shifu's tour ended, Sister Lin also began to tour. She was afraid that there was no closer venue, so she was scrambling for tickets every time, but the tickets for every scene were lost in seconds. Finally, the second round of tour in Shenzhen was added. Although it was still a long way away, it started to grab tickets. After all, if the last one failed, it had to be one. Don't leave too many regrets. But even if it is an extra field, [...]

When using the UNAS system, if there is no RAID, in some cases, when a hard disk has a bad track or needs to be replaced with a larger capacity hard disk, or needs to be replaced with a solid state, the hard disk needs to be replaced. In addition, if there are some services running in NAS at this time, we must ensure that the path of the replaced hard disk cannot be changed. This article actually follows the principle of "Linux replaces the hard [...]

When using the Linxu system, if there is no RAID, in some cases, a hard disk needs to be replaced when a bad track occurs, a hard disk with larger capacity needs to be replaced, or a solid state needs to be replaced. In fact, in general, you can simply and roughly mount the hard disk, create a partition, directly mount it to the system, copy files, and then unplug the old hard disk. Even if there are some services to ensure that the hard disk is replaced later [...]

"A thousand things in the world • Songs for bosom friends" Unconsciously, I have listened to Huang Huang's songs for several years, and I don't remember when I was surrounded by fans. I remember that it should be the evening of one weekend. One day after lying dead, I got ready to cook dinner, and then I brushed my mobile phone to the yellow Weibo, which was announced by the Second Inspector. At that time, I wanted to see if there was a closer city to see if I could make a dash, but I found that Fuzhou was the second stop of the second tour, [...]

Because of some reasons to extract video audio tracks, it is troublesome to find them in the search. I also need to install a voice shadow and a PR? Do I think so? I just extract an audio. It suddenly occurred to me that ffmpeg can do this thing. I really can. Just as the blog has not been updated for a long time, it can be regarded as a memo. First download ffmpeg Github [...]

In daily work, it is inevitable to delete files by mistake or modify files without retaining historical versions. In order to avoid this situation, we studied the function of historical versions of files provided with Win10 today. After some trouble, sending out the process is also a backup. After checking, this function depends on file history or restore point. Where the file history depends on an external drive or network [...]

An intrusion detection device is installed in a client's computer room, which needs to mirror all the traffic on the core switch for analysis. However, there are network monitoring devices in the client's computer room. The traffic mirror has been made on the core switch and the observation port has been configured, and the interface has been used by the network monitoring device. According to the test, the H3C switch cannot configure multiple observation ports for a group of traffic images, so the device cannot be deployed normally. H3C switch does not support configuration [...]