peri deb.

[Vasilis Vasaitis]

On Tue, Apr 27, 1999 at 04:06:07AM +0300, Yiannis Galanomatis wrote:

..[snip]..

> ooops. Eixa thn entypwsh pws h topo9ethsh twn arxeiwn sto disko phgenai
> symfwna me to protypo POSIX, kai synepws oti htan koino se ola ta unices.
> Mono apo ayto pou les 9a mou bainan sovares ypopsies gia thn symvatothta
> twn dianomwn tou linux, p.x. kata poso symvates einai dyo rpm-based dianomes
> opws h SuSE kai h RedHat.

  Oxi oxi to POSIX den exei tipota na kanei me ti thesi twn arxeiwn (ap'
oso ksero). Iparxoun megales diafores anamesa se megala reumata tou UNIX
(BSD, System V, Linux (ki as min einai UNIX)), kai mikroteres anamesa
stis ekdoseis autwn. Oi ipopsies sou einai entelos vasimes, alla to
thetiko einai oti iparxoun projects me skopo ti sigklisi (FHS, LSB).

> > sti diaxeirisi tou
> > sistimatos,
> 
> dhladh? ennoeis tous grafikous configurators (Xconfigurator, linuxconf, ...)

  Kai autous (pou to debian den exei :-)), kai genika oti ergaleia
iparxoun pou rithmizoun ti leitourgia tou sistimatos, me tin paremvasi
'i oxi tou administrator.

> > stin epilogi twn programmatwn,
> 
> ligo poly ta pragmata den nomizw na diaferoun poly...

  Diaferoun _poly_. Entaksei, kapoia vasika pragmata einai idia se ola
ta distributions, alla oti oi anagkes eksidikeuontai esto kai ligo, ola
allazoun.

> > etc. etc. Kata tin prosopiki
> > mou apopsi, se arketous apo autous tous tomeis to Debian iperterei twn
> > ipoloipwn (kai mporo na dikaiologiso tin apopsi mou).
> 
> Einai mia kalh stigmh na to kaneis. Dioti h katastash me thn debian einai kapws
> 9olh kai pistevw pws 9a htan xrhsimo na ginei mia syzhthsh se ayto to 9ema
> mias kai h debian exei thn idiaiterothta ths san mh-kerdoskopikos organismos
> kai einai krima na parameristei.

  OK loipon, tha to kano. An thymasai eixa grapsei kai kapoia
pragmatakia molis evala to Debian, alla den sinexisa epeidi den imoun
sigouros kata poson endieferan ta meli tis listas. Exoume kai leme:

  - Morfi twn paketwn: vlepe to sxetiko parakladi autou tou thread me
ton Pavlo. Mono ksana na toniso oti den metraei mono to megethos twn
xaraktiristikwn, alla kai pws ta xrisimopoieis. :-)

  - Ekkinisi tou sistimatos: Gia mena i kaliteri dianomi. Anafero kapoia
vasika simeia pou thymamai tora:

    - Ta init scripts vriskontai sto /etc, oxi sto /sbin pou
  empneustikan na ta valoun oi dimiourgoi tou SuSE. Oti kai na ginei,
  einai prota ap' ola configuration files kai meta ektelesima. Ithela na
  to po auto gia to SuSE na isixaso.

    - Anti gia rc.local (RedHat) 'i boot.local (SuSE) iparxei o
  katalogos /etc/rc.boot, ston opoio mporoun na mpoun scriptakia kata
  voulisi. Episis i prosthafairesi enos script tou init.d/ sta
  run-levels (stous katalogous rc?.d/) ginetai poli eukola, me tin
  entoli update-rc.d.

    - Ta init scripts, ektos apo `start' kai `stop', dexontai entoles
  `restart' (epanekkinisi tou daemona), `reload' (ksanadiavasma twn
  ritmisewn - oxi gia ola) kai `force-reload' (reload an to ipostirizei,
  allios restart).

  - Domi tou filesystem: I kentriki idea tha mporouse na sinopsistei sto
eksis: sto Debian kathe arxeio exei to logo tou pou vrisketai ekei pou
vrisketai. Akoloutheitai pista to FSSTND (FileSystem STaNDard, 1.2), enw
gia to potato sxediazoun na to kanoun simvato me FHS (Filesystem
Hierarchy Standard, 2.0). To /usr kai to /var einai pio adeia apo
opoiadipote alli dianomi, an auto leei kati se allous ektos apo emena.

  - Diaxeirisi tou sistimatos: Edo to RedHat kai to SuSE iperexoun me ta
kentrika programmata diaxeirisis pou exoun, se sxesi me ta diafora kai
periorismena /usr/sbin/*config tou Debian. Omos toulaxiston to Debian
den tha grapsei pano apo tis dikes sou rithmiseis piso apo tin plati
sou...

  - Epilogi twn programmatwn: Apeirws perissotera apo to RedHat. Akoma
kai se sxesi me to SuSE exei safos megaliteri poikilia, an skeftei
kaneis oti kai ta dio exoun tessera CD (to 5o tou SuSE (live filesystem)
de metraei), omos ta CD tou SuSE exoun polla ogkodi paketa, p.x. ta
emporika programmata. As poume to Debian exei giro stous 15 mail clients
(mutt mh etc.), 5 mail servers (sendmail etc.) kai 6 web servers!

  - Ama iparxoun ki alloi tomeis me arketes diafores apo dianomi se
dianomi peite mou...

  Genika ego vrisko to Debian ws tin texnika artioteri dianomi. Oson
afora tin eukolia xrisis, gia ton arxario den einai toso aplo oso to
RedHat kai to SuSE. Omos otan eisai kapos pio proxorimenos kai exeis kai
pio proxorimenes anagkes, ekei to Debian tha se dieukolinei...

> na ypo9esw pws h redhat evgale to rpm gia na antagwnistei thn debian?
> asxhmo senario....

  Poli asximo gia na einai alithino. Kai den einai. Oxi, auta eginan
aneksartita, apla kamia apo tis dio tora den prokeitai na allaksei.

-- 
Vasilis Vasaitis
vvas at hal.csd.auth.gr


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