hard links - soft links
Christos Ricudis
ricudis at paiko.gr
Fri Sep 18 17:20:03 EEST 1998
Hello Linux-greek-users!
On 18 Sep 98, Linux-greek-users wrote to All with subject "hard links - soft
links":
L> Mia kai ila me gia hard links, pote xrhsimopoioyme hard kai pote
L> soft links; (ta man pages den einai kai toso diafvtistika)
Na xrhsimopoieis pantote soft links, *ektos* apo tis periptwseis poy 8eleis to
link na parabiazei mia "periorismenh" apopsh toy filesystem namespace (dhladh
praktika se chroot jails), H sthn periptwsh poy den 8eleis na mporei kapoios na
ksexwrisei poio arxeio exei ginei link se poio (an kai ean xreiasteis pote na
to kaneis ayto mallon 8a ksereis giati 8eleis na to kaneis :>).
Ena soft link einai ena arxeio eidikou typoy poy "deixnei" se ena allo shmeio
toy arxeiosysthmatikoy onomatoxwrou. Ena hard link einai aplws ena directory
entry poy "deixnei" sto idio akribws i-node me ena allo arxeio. Oi synepeies
einai oi ekshs :
1) Mporei kapoios na ksexwrisei an ena arxeio einai soft link h kanoniko
arxeio, alla anamesa se dyo hard links den mporeis na ksexwriseis tipota.
2) Ena hard link den mporei na kseperasei ta oria toy device sto opoio
brisketai (to inode space einai monadiko mono sta oria toy device sto opoio
anaferetai)
3) Ena hard link mporei na diaperasei ena chrooted periballon
4) Den epitrepontai hard links se directories, giati to filesystem apo dentro
metatrepetai se kyklikos grafos, prosferontas sou mia plh8wra entypwsiakwn
algori8mwn gia na paikseis mazi toy (hamiltonian cycle, kanenas? :>)
5) Ena hard link den ksodeyei i-nodes (alla an ayto einai xrhsimh plhroforia,
exeis *sobaro* problhma :>)
--
Christos Ricudis
"Windows has detected that a gnat has farted near your computer. Press any
key to reboot". - anonymous in ASR.
--
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