Introduction to the Open Source
An
open-source software (OSS) is a computer software for which the source
code and certain other rights served for free of charge.nowadays open
source softwares are more popular then earlier and todays generation
looking for the software that really useful them and for free of charge.
Another advantage of using open source software is that the source code
which used to make the software is provided along with it. Then anyone
can develop the software using it.
History about Open Source
Richard Stallman
In the early 80's, a programmer named Richard Stallman worked for MIT. He spent huge amounts of time working on the
original Emacs, an operating system called
ITS, and the exceedingly cool
LISP machines.
Stallman wrote good software. His programs were clever--they were
frequently built around a few good ideas that made everything else easy.
But Stallman was also an ideologue. His software came with instructions:
Share this code with your fellow users. Learn from it. Improve upon it.
And when you're done, please give something back to the community.
To Stallman, this sharing was a moral principle. And as it turned out,
Stallman would happily turn down money, fame and glory in the name of
his moral principles.
You can read the whole story in Levy's excellent (but out-of-print) book,
Hackers: Heros of the Computer Revolution.
The GNU Manifesto
In 1984, Stallman was wrestling with the software equivalent of Napster. Like the Grateful Dead, he was an artist who
wanted
users to share his work. He asked them to send him some money if they
could--so he could write more--but he never required them to pay a cent.
He didn't want to discourage sharing.
But Stallman had a larger problem: Even if users could share the software that
he wrote, they wouldn't be able share anybody else's. This bothered him.
He could have gone down the Napster route, and encouraged software
piracy. Or he could have given up, and only shared a few small tools.
Instead, Stallman decided to write an entire operating system, a
complete set of development tools, and all the applications that anybody
would ever need. He planned to give all these tools away, so that his
users would have something to share.
Sure, this was a pretty laughable goal, especially for a man who lived in his office at MIT and rarely combed his hair.
Stallman's vision is laid out in the
GNU Manifesto.
This manifesto is either a profoundly important document or the
mimeographed ravings of some guy in the city park. I've never been
entirely sure which.
The GNU Project and The Free Software Foundation
"Free software" is a matter of liberty, not price. To
understand the concept, you should think of "free speech", not "free
beer." -Quoted from the Free Software Foundation web site
Stallman found some volunteers, set up the
Free Software Foundation, and started writing software.
He wrote a
new version of Emacs, which
still gets rave reviews from authors like Neal Stephenson. He wrote
GCC,
which was one of the best C compilers of the age. He enlisted hordes of
volunteers, who began to clone the entire Unix toolset (which was quite
popular at the time).
The GNU project also adopted some their software from outside sources. They borrowed the
X Window System from MIT and Compaq. They adopted TeX (a typesetting system) from
Donald Knuth. They stayed away, however, from the
BSD code, which was the target of an AT&T lawsuit at the time.
Linus Torvalds
By 1991, the GNU Project had either written or located most of the parts
of a complete Unix system. But they were having problems with the
kernel.
Stallman (and other volunteers) were working on a kernel called
the HURD. Unfortunately, the HURD was a bit
too clever, and the team had gotten in over their heads. They certainly weren't in any danger of shipping.
Meanwhile, young Linus Torvalds was hacking on a tiny kernel, just a toy. He
announced it on comp.os.minix:
I'm doing a (free) operating system (just a hobby, won't be big and professional like gnu) for 386(486) AT clones.
To compile Linux, you needed GCC. To run any programs, you needed the GNU
C library. And half of the programs available for Linux were originally written by GNU volunteers.
Linus never made any secret of his debt to the GNU project. He even decided to use their (rather complicated)
software license as a way of saying thank you.
The Linux Explosion
But despite Linus's debt to the GNU project, he made a much better
leader than Stallman. Linus was a software guy, pure and simple. He
never spent much time writing polemics or arguing philosphy. And he
never planned very far ahead. He just did his thing, and argued for his
beliefs by example.
(Back when Linux had perhaps a hundred thousand users, Linus made an
offhand quip about "world domination". Now that Linux is a household
name, he no longer make jokes like that.)
Linus could
convince people, many of whom were frightened by
Stallman. And Linux grew from "just a hobby" to the third most popular
operating system in the world.
Netscape and Open Source
Eric Raymond was an old friend of Stallman's. He had written some pretty good software in his day, and helped edit the
Jargon File, a compedium of folklore about ITS, Unix and the Internet.
He wrote a paper called
The Cathedral and The Bazaar.
(The Cathedral, in this paper, doesn't actually represent proprietary
software. If anything, it represents the HURD and Stallman's insular
development methodologies.)
Netscape took a liking to Eric's writings, and decided to turn their browser into a bazaar.
Eric was very much into spin control, as it turned out, and wanted to
repackage Stallman's radical ideas into a less intimidating form. He
convened some friends, put the kibosh of the word "free" (which was
politically unacceptable), and helped coin the term "open source".
At the time, people like Larry Wall, Brian Behlendorf and Guido van
Rossum weren't talking to each other, or to the Linux developers. They'd
built their own communities, but there was no real unification.
Tim O'Reilly sold a lot of books about Perl, Python, Apache, and various
other "open source" software. The O'Reilly books were of
extraordinarily high quality, but they were proprietary. (Stallman had
already
pointed this out to anybody who would listen.)
So people like Tim and Eric worked on the PR, and started pulling these
various groups together. And for the most part, their efforts
did accomplish something. Today, everyone's heard of open source, and people like Guido and Linus actually talk to each other.
The True Leaders
But don't mistake the open source
PR schtick for the real heart of the free software movement.
Those of us in the trenches have all wrestled with
Stallman's ideas.
Some of us have accepted Stallman; others have rejected him. In our
hearts, most of us are uneasy about him. For better or for worse,
Stallman's not a comfortable man.
Just about everybody loves Linus and Guido and Larry. They're great
guys, and they write some cool software. They're decent folks, too--not
fanatic preachers, but good, solid people who are a bit embarassed by
their fame.
Closer to home, we all know some individual project leaders. These folks
help maintain small (but important) projects. Nearly all of them are
volunteers, coding for love or necessity. A few can make a living
through consulting. With very few exceptions, the project leaders are
wonderful, helpful people.
Giving Credit
Every once in a while, you'll see the terms
free software and
GNU/Linux. These terms are awkward (and don't make for good PR), but they preserve the memory of Stallman's efforts.
This movement isn't held together by ideology or by secret summits. Most
of the developers don't even have an enemy (despite what you might have
heard from the jerks on
Slashdot).
Many free software developers don't even preach against proprietary
software--they write it for a living, and only contribute to free
software on the weekends.
