introdución ao software libre - o grove 2011
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Engadín uns cambios á presentación "Servidores Linux"TRANSCRIPT
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In t r o d u c ió na o
S o f t w a r e L ib r e
A lb e r t o P e r m u y L e a l - O G r o v e 2 0 11
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“TALK IS CHEAP,SHOW ME THE CODE”Linus Torvalds
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HistoriaGNU e LinuxPrácticaR e s u m o x o r n a d a
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N o c o m e z o f o i l ib r e …
70's sw acompaña oa hw
$ x mantemento = código fonte
Primeiros grupos de usuariosSHARE → IBMDECUS → DEC
IBM rachou coa inercia positiva
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P e r o d e s p o is …
Mediados 70's sw privativo acompaña hw
sw = $
( P A U S A )1972 nace Unix1973-74 Unix nas Universidades, permitíase o uso para fins académicosNacen as primeira comunidades que xiraban en torno a Unix como en Berkley(CA)80's acceso a Unix difícil e moi caro
( P A U S A )
Pequenos achegamentos á idea actual de swlibre
1984 : RMS,GNU,FSF
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M o v e m e n t o G N U
Richard Stallman Extrano no seu propio mundoConstruir sistema de sw completo GNU
1984 : RMS,GNU,FSF
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M o v e m e n t o G N U
Tiñan ferramentas GCC , EMacsSempre preocupados polas liberdades dos usuarios: GPLPero faltaba o núcleo
1984 : RMS,GNU,FSF
¿Cando o software é realmente libre?
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4 l ib e r d a d e s
0 = l ib e r d a d e d e u s a r o p r o g r a m a c o n c a lq u e r p r o p ó s i t o
1 = l ib e r d a d e d e e s t u d a r o p r o g r a m a
2 = l ib e r d a d e d e d is t r ib u ir o p r o g r a m a
3 = l ib e r d a d e d e m e l lo r a r o p r o g r a m a e f a c e r p ú b l ic a s a s m e l lo r a s
1984 : RMS,GNU,FSF
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Linux é un kernel, o núcleo do sistema operativo. O ssoo débese de chamar GNU/Linux, xa que e o froito de “unir” ferramentas GNU con Linux. Linux é Unix-like, parece un Unix pero non é Unix. Se diferencia de éste na súa comunidade, sistemas de paquetes e o concepto de distribución.
¿ Q u é é L in u x ?
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COMUNIDADESOFTWARE LIBRECOLABORACION
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FINLANDIA, LINUS E UN KERNEL
QUIERO USAR UNIX NA CASA
PROYECTO FIN DE CARREiRA
MINIX PARA i386
LINUS + UNIX
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VERSIONS e CIFRAS
.- 08/1991 ANUNCIA comp.os.minix
.- 09/1991 0.0.1 - 10.239
.- 03/1994 1.0 - 176.250 XWindow
.- 05/1996 TUX
.- 06/1996 2.0
.- 01/1999 2.2 1.800.847
.- 12/1999 PARCHES PARA MAINFRAMES
.- 12/2001 2.4 3.377.902
.- 12/2003 2.6 5.929.913
.- 02/2010 2.6.33 12.990.041
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... LIBRE
...LIBRE PARA ESTUDAR,COPIAR,MODIFICAR...
...COMUNIDADE
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...PODER DA LIÑA DE COMANDOS
...MULTITAREA
...SISTEMAS DE FICHEIROS
…MODULAR E ESCALABLE: PDA A MAINFRAMES
...MULTIPLES ARQUITECTURAS
...LINGUAXES DE PROGRAMACION
...VIRTUALIZACION
...ANIMACION
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¿ D IS T R IB U C IO N ?
. - K E R N E L
. - A P L IC A C IO N S
. - C O L L E IT A P R O P IA
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¿ D IS T R IB U C ION ?
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G a lp o n M in iN O
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?
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/h o m e
a m ig a b lee s c r i t o r io sm u lt im e d ia
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$ e n t e r p r is e
¿ s o p o r t e ?
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O s o p o r t e t é c n ic o
n o n é g r a t u i t o
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In t r u s is m o p r o f e s io n a l
In t e r v e n c ió n s e r r ó n e a s
D e s c o n t e n to
F o r m a c ió n é f u n d a m e n t a l
S e G N U /L in u x é g r a t is . . .
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¿ A q u é e s p e r a m o s ?
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O e x e mp l o R e d Ha tF u n d a d a e n 1 9 9 33 2 0 0 t r a b a l l a d o r e sB e n e f ic io n e t o $ 8 7 MR HE L - R HNF e d o r aA p o r t a c ió n a o K e r n e l
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¿Probamos?
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G r a z a s p o r a s is t i r .