wild 1995

Chapter 24 Information
China only formally implemented the degree system in 1981. When the first batch of doctoral graduates graduated in 1983, there were only 18 people in total. After that, the scale continued to expand. By the early 90s, there were about 3000 doctoral graduates every year.

However, compared to more than 1000 colleges and universities across the country, 3000 PhDs are a drop in the bucket. Therefore, in this special era, even ordinary masters can easily find good teaching jobs in universities, let alone returnees with PhDs.

Liu Shaosong returned to China after completing his Ph.D. from the University of Tsukuba in Japan in 1993. Due to family reasons, he gave up the top schools such as the restoration of diplomatic relations between the Qing Dynasty and the Northern Qing Dynasty. He chose to teach at Yunda University, an ordinary key university.

Yunda attaches great importance to Liu Shaosong. Not only did he directly propose an associate professor when he first joined the job, but he also allocated a house with a small yard. When Di Ye passed by, he was building a snowman in the yard with a plastic shovel.

"Ms. Liu, you cut corners a bit when you piled up this snowman."

"It's for Qingqing, she's only 2 years old, so there's no need to make it too tall."

"It's not about being tall, it's about being ugly."

Liu Shaosong laughed loudly, waved his shovel, and said, "Then come and make me a nice one."

Di Ye raised the piggy lantern in his hand and said, "I bought a New Year's gift for Qingqing, put it in the house first, so as not to get wet, and I will build a snowman with you later." "

After Liu Shaosong came to Yunda to teach, he taught two courses of "Data Structure" and "Operating System". Di Ye performed very well in these two courses, so he looked at him differently, and usually came and went frequently.

After changing his slippers in the entrance, Di Ye turned left and walked into the living room. He saw a woman reading a book sitting on the sofa. She had a soft face and gentle temperament. It was Liu Shaosong's wife Fu Wenjing, so he greeted her and put the piggy lantern on the coffee table.

Seeing the delicate workmanship of the lantern, Fu Wenjing asked, "Is this handmade?"

"Yes, there is an old master in Chenghuang Temple who has been making zodiac lanterns for decades, and his craftsmanship is very good."

"Where is his shop? I'll go back and buy a few for relatives' children."

Di Ye reported the direction, then took out three books with rather old covers from his laptop bag, and said, "Sister Wen Jing, I found this at the old book stand of Chenghuang Temple. It was first published in 3. It is complete in three volumes. I give it to you as a New Year's gift."

Fu Wenjing liked Zhang Henshui's works very much, and was very pleasantly surprised. She stood up and took the book, and asked, "Di Ye, isn't this expensive?"

"It's not expensive, this product is relatively ordinary, only a few dozen dollars."

Fu Wenjing put the three books on the coffee table, sized them up and said with a smile: "Di Ye, you have not come to our house once or twice, and you suddenly gave me and Qingqing gifts today, is there anything you need to ask Teacher Liu for help?"

"I really want to ask Teacher Liu for a little help, but these books are purely to thank Sister Wen Jing for taking care of me in the past two years."

"No wonder Shaosong said that you have become smart recently and can speak well."

Di Ye had a pure unrequited love for Fu Wenjing, and he had never mentioned her before he disappeared, so Di Ye was too lazy to cause trouble. After a few small talk, he went out and helped Liu Shaosong build a snow treasure from "Frozen" in the yard.

Xuebao's funny and cute shape made Qingqing fall in love with it immediately after waking up from a nap. Liu Shaosong walked around it several times with her short legs. Liu Shaosong was so amazed that he went back to the room to get a camera and took a dozen photos as souvenirs.

"Di Ye, set a time-lapse and come over to take a group photo with our family."

"it is good."

After the group photo was taken, Liu Shaosong took Di Ye to the study room, and while helping him install various software on his laptop, he discussed with him how to implement the compression algorithm. It turned out that Di Ye had a well-thought-out plan and already had a very clear programming idea.

"You have made great progress recently. It seems that you have opened up the second line of Ren and Du. Did you read some cheats?"

"I did read some cheat books, Mr. Liu, do you know about free software and Linux?"

"of course I know."

Liu Shaosong stopped typing, raised his head and asked, "Have you read the source code of Linux?"

Di Ye did have the source code of Linux in his memory, but because there was no Internet in Yuncheng at this time, it was difficult to explain the source of the code, so he could only vaguely say: "I read some, and I was very inspired."

Liu Shaosong nodded, and said, "Linux was jointly developed by a group of top programmers in the world. You can indeed learn a lot of knowledge by looking at its source code. You can draw inferences from one example and improve your level so quickly. It seems that your talent is better than I expected."

Di Ye saw that he admired Linux very much, and he should be a fan of free software, so he asked: "Mr. Liu, do you have any software here that can read the source code?"

"I don't have Linux, only some GNU components, and I will copy them to you later."

Free software is a concept proposed by the legendary programmer Richard Matthew Stallman. He believes that software users should have the right to freely run, copy, distribute, learn, modify and improve software, so he launched the GNU project in 1984 to create an open source operating system compatible with Unix.

When the GNU project developed to 1991, it already had many components such as editors, compilers, and debuggers, covering almost all aspects of computer applications, but it lacked a stable kernel. Just in this year, Linus Torvalds released the Linux kernel, so the two merged and complemented each other to form the famous GNU/Linux operating system.

After Liu Shaosong copied several GNU components into Di Ye's laptop, he got up and took out a CD from the bookcase, and said, "This is the 386BSD operating system I bought when I returned from Japan. It only has a kernel and almost no application functions, but the code is concise and elegant, and has a high learning value. Take it back and study it."

Seeing the name "Willian & Lynne Jolitz" on the disc, Di Ye was overjoyed just like Fu Wenjing saw "Cause of Laughing". She took it and put it in her computer bag, saying, "I will definitely study it when I go back."

He couldn't help but be unhappy, because Willian and Lynne are a legendary husband and wife programmers in the history of computers.

The purpose of the GNU project is to create a Unix-compatible operating system. The reason for this is because Unix is ​​a commercial fee-based software, and the copyright belongs to AT&T.

The Unix operating system was born in the famous Bell Labs in 1970, and was commercialized by AT&T in 1977. In the same year, under the guidance of Thompson, the father of Unix, Bill Joy, a graduate student at the University of California, Berkeley, compiled the BSD version of Unix. After that, two versions of Unix developed in parallel, one closed-source license, and one open-source free dissemination.

As AT&T's license became more and more expensive, it rose from $1979 in 99 to $1989 in 25. The computer research group at Berkeley couldn't bear it and decided to remove all AT&T code and rewrite Unix. However, after 18 months of hard work, there were finally 6 kernel files that could not be removed.

In 1991, William Jolitz and Lynne Jolitz teamed up, and within half a year, they not only rewritten the six kernel files, but also transplanted Unix from server-based minicomputers to Intel 6 computers used by ordinary people, and named it 386BSD, which is as legendary as Yang Guo and Xiaolongnu.

Although 386BSD will no longer be updated due to community conflicts, many versions have been derived, such as FreeBSD, NetBSD, and Apple's Mac OS. Microsoft's Windows also borrowed a lot of code, so it played an important role in the history of operating system development.

Di Ye is a shoddy programmer like Mr. Ye. He can't write code well, but he likes to collect all kinds of computer peripheral products. Now that he can get the original 386BSD disc, he is naturally overjoyed. After collecting it, he asked: "Mr.

"Yes, what's the matter?"

"I'm going to Guangdong Province tomorrow. I heard that you can get online through Hong Kong's optical fiber there. I want to experience it. Can you teach me how to read articles in the free software community?"

"It's simple, I'll give you some newsgroup and forum URLs, and I can also give you a few email addresses..."

Liu Shaosong was a very competent teacher, he knew everything about Di Ye, and talked endlessly in the study for more than two hours, and he didn't let him go until after 4 o'clock in the afternoon.

"For the sake of the good quality of these CDs, I don't care about you stealing my name to sell modified CD players."

"Thank you, Mr. Liu, when the next semester starts, I will give you a big red envelope."

"Students give red envelopes to the teacher. I'm afraid that the school will investigate. I want to send you to Qingqing."

"Teacher Liu is so humane, the students admire him!"

After returning home, with the help of Xiao Honghua, Di Ye spent the night typing out the source code of DY-ZIP with a laptop, and copied a few classic articles about open source software, stored them on a floppy disk, put them in a suitcase, and prepared to take them to Guangdong Province and post them on the Internet when possible.

At about 8 o'clock the next morning, Fan Dazhi drove a Jinbei Sea Lion van to the gate of the community, picked up Di Ye who was waiting on the side of the road, and drove towards Guangdong Province. The Spring Festival was coming soon, and bus, train and air tickets were hard to come by. If he wanted to go to Guangdong Province to purchase, he had to drive by himself.

Besides Fan Dazhi, there were three other passengers in the van, one of whom Di Ye knew was Bi Wanxi who was discussing pirated VCDs with Di Yongchang that day.

(End of this chapter)