et Ssta UNIX

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InterNet

• ???t?a - Internet ?a?
• ??e?t?????? ?a??d??µe??

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?st???a t?? Internet

• ?????? ?? ?/? ?ta? a?e???t?te? µ???de?.
• ? µetaf??? p????f????? ap? ??a? ?/? se ?????,
  ????ta? µe d??t??te? ???te?, µa???t???? ta??e?e?,
  d?s????, d?s??te? ??p
• ???t?µ?te??? t??p?? ? d?µ??????a s??des?? p??
  ep?t??pe? ep????????a.
• ??p??? d??t?a (LAN) ap? d?? ? pe??ss?te???? ?/?
  p?? µ???????ta? t?? p????f???e?.
• ?p?t??esµa ??e?t?????? ?a??d??µe??.

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?a??de??µa t?p???? d??t???
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???t?a ???t???

• ?a t?p??? d??t?a a?apt?ss??ta? s?????? e?t??
  e??? ?t?????. ?? ????? d?as??des?? e??a? s??????
  ?a??d??.
• ?? ?/? e??? t?p???? d??t??? µ???????ta?
  pe??fe?e?a??? s?s?e??? ?a? ????sµ???. ??
  ??t?p?t??, ??se?? ?ed?µ???? ??p.
• ? s??des? t?p???? d??t??? µeta?? t??? d?µ?????e?
  ??a d??t?? t?p???? d??t???.

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???t?? d??t???
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???t?? d??t???
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?? Internet

• ?e????se st? 10et?a t?? 1980 µe e?e???t??? ?a?
  a?apt???a?? p?????µµata t?? NSF ?a? DOD
• ? ??e??a p?? ????e ?????? se pa?ep?st?µ?a
  ?d???se sta ArpaNet, DarpaNet, CsNet ?a? te????
  st? InterNet.
• ?? InterNet e??a? p???? ??a d?e???? d??t??.
• ?? InterNet ap??t? 2-3 e?at?µ???a ????? ???ste?
  ???e µ??a ! ! !
• ?p?????? s??????? s?µe?a 200 e?at?µ???a ???ste?.

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???pt??? t?? Internet
?t??
????µ?? ???st??
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??e?t?????? ?a??d??µe??

• G?a ???e ???st? ?p???e? ??a a??e?? p?? pa??e?
  t?? ???? t?? ??e?t??????? ??aµµat???ß?t???.
• ? ???e ???st?? ??e? µ?a ??e?t?????? d?e????s?.
• ???e ???st?? µp??e? ?a st???e? ?a? ?a d??eta?
  ??e?t?????? a???????af?a.

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????T??S??S

• ?? d?e????se?? ap?te????ta? ap? d?? µ???

• ?? ???µa t?? ???st?, d??ad? a?t? p??
  ???s?µ?p??e?ta? st?? d?ad??as?a t?? login.
• ??? d?e????s? t?? ?/? st?? ?p??? ? ???st??
  s??d?eta? ?a? ???s?µ?p??e?.

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?a?ade??µata d?e????se?? ?/?

• socrates.cc.uoi.gr
• helios.ecn.purdue.edu
• kiaat.unisa.ac.za
• zeus.cs.uoi.gr
• ptolemy.la.asu.edu
• psyche.ee.auth.gr

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Internet Protocol ( IP ) d?e????se??

• ?p?te????ta? ap? t?sse?e?? (4) a???µ??? p??
  ???????ta? µe te?e?e?.
• ?.?. 193.92.5.11
• ???e ?/? st? Internet ??e? µ?a d?e????s? a?t??
  t?? e?d???.
• ???e ??a ap? ta p??????µe?a pa?ade??µata
  d?e????se?? a?t?st???e? se ??p??a IP d?e????s?.

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?????s? d?e????se?? ?/?

• socrates.cc.uoi.gr

??e????s? pe??????
???µa ?/?
jupiter.cs.uoi.gr
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??e????se?? ?e?????? (domains)

• cc.uoi.gr

?????? ???a?
Computer Center
?? d?e????se?? st?? ??? a????????? e?af???
d?af??et??? s??ta?? ap? a?t?? t?? ????? ?????.
University Of Ioannina
GReece
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??e????se?? ??a t?? ???

• ?at????? .edu ?a?ep?st?µ?a.
• ?at????? .com ?ta??e?e?.
• ?at????? .org ???a??sµ??.
• ?at????? .gov ??ße???t???? ?p??es?e?.
• ?at????? .net ?p??es?e? Internet.
• ?at????? .mil St?at??t???? ?p??es?e?.

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????T??S??S ???S???
?a?ade??µata

• lagaris_at_nrt.cs.uoi.gr
• fotiadis_at_medcs.cs.uoi.gr
• lagaris_at_helios.ecn.purdue.edu
• csst9801_at_zeus.cs.uoi.gr

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?p?st??? µ???µ?t??

• ??????µµata p?? ?e?t??????? ?? (??e?t???????)
  ta??d??µ?? (mailers)
• mailx (Standard Unix)
• mail (Standard Unix)
• eudora (Windows, Macintosh)
• netscape mail (Se ??a ta s?st?µata)
• ??p . . .

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??ad??as?a ?p?st????

• ? e?t???
• mailx d?e????s?_???st?
• ?e???? t?? d?ad??as?a d?µ??????a? ?a? ap?st????
  e??? µ???µat??. ??.
• mailx lagaris_at_nrt.cs.uoi.gr
• p??et??µ??e? t?? ap?st??? µ???µat?? p??? t??
  ???st? lagaris st?? ?/? µe d?e????s?
  nrt.cs.uoi.gr

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fort.dp.metro.com
Clark_at_fort.dp.metro.com
clark lois perry jimmy
mailx

• ??? ??a µ???µa pe????eta? se ??p??? a??e?? p?
  st? a??e?? tosup t?te, ? e?t???
• mailx clark_at_fort.dp.metro.com lt tosup
• st???e? st?? ???st? clark st?? d?e????s?
  fort.dp.metro.com t? µ???µa p?? pe????eta? st?
  a??e?? tosup

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?????G??? ???S?

• G?a ?a sta?e? ??a µ???µa st?? d?e????s?
  bill_at_head.msf.com
• E?e???p??e?ta? ? d?µ??????? µ???µ?t??
• mailx bill_at_head.msf.com
• ???t??peta? ? ???st?? ?a e?s??e? ??a s???pt???
  t?t?? ??a t? ??µa t?? µ???µat??
• Subject Weekend Visit
• St?? s????e?a p???t?????e?ta? t? ?e?µe?? t??
  µ???µat??.

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?????G??? ???S?

• ?? µ???µa ap?st???eta? e?s????ta? st? ?e?µe?? t??
  µ???µat??
• ??a ??a ??aµµ? p?? pe????e? µ??? µ?a te?e?a
  st?? p??t? ??s? ?a? p???t???????ta? ENTER , ?
• ??a ??a ??aµµ? ?a? p???t???????ta? Control D .

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?a??µet??? t?? e?t???? mailx
mailx -s Trip -b anag -c iel lagaris
K????p???s? st?? ???st? iel
?a?????e? t? ??µa t?? µ???µat??
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?a??de??µa

• G?a ?a sta?e? µ???µa st?? ???st?
• clinton_at_wh.wdc.gov
• µe ?????p???s? st???
• alan_at_fed.bn.org ?a? bill_at_head.msf.com
• ?a? µe ???f? ?????p???s? st???
• lois_at_dp.met.com ?a? lana_at_star.lab.com
• a??????e?ta? ? e??? d?ad??as?a

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mailx -b "lois_at_dp.met.com lana_at_star.lab.com"
-c "alan_at_fed.bn.org bill_at_head.msf.com"
clinton_at_wh.wdc.gov
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G?aµµat???ß?t?a

• G?? ???e ???st? ?p?????? d?? "??aµµat???ß?t?a"
• ?? ?????? ??aµµat???ß?t?? p?? d??eta? t?? ??a
  a???????af?a.
• ?? de?te?e??? ??aµµat???ß?t?? st? ?p???
  ap????e???ta? ta µ???µata p?? ????? ?d? d?aßas?e?.

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?? ?????? G?aµµat???ß?t??
/var/spool/mail/jimmy

• ????? ???eta? ??p??? ??? µ???µa, p? ??a t??
  ???st? jimmy, ? ta??d??µ?? t? t?p??ete? st?
  ?????? ??aµµat???ß?-t?? p?? e??a? ??p??? a??e??
  µe ???µa
• /usr/mail/jimmy ? /var/spool/mail/jimmy ?
  ??t? pa??µ???.
• S?µe??ste ?t? t? a??e?? a?t? de? ß??s?eta? st??
  ?at????? t?? ???st?.

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?? de?te?e??? ??aµµat???ß?t??
/usr/home/jimmy/mbox

• ????? d?aßas?e? ??a µ???µa, µeta???e?ta? ap? t?
  ?????? st? de?te?e??? ??aµµat???ß?t??.
• T? a?t?st???? a??e?? ß??s?eta? st?? ?at????? t??
  ???st? ?a? s?????? t? p???a????sµ??? ???µ? t??
  e??a? mbox
• ? ap???t? d?e????s? t??, e??a? t?? t?p??
  /usr/home/jimmy/mbox

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?a?a?? µ???µata

• G?a ?a d??µe pa?a?? µ???µata (p?? e??a?
  ap????e?µ??a st? mbox) d????µe t?? e?t???

mailx -f mbox
?a??µ???? ??a ?a d??µe pa??? µ???µata,
ap????e?µ??a se ??p??? a??e?? (p? file) d????µe
t?? e?t???
mailx -f file
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?e?a?t??? d??at?t?te?

• ???? ?a? a?????s? µ???µ?t??.
• Ap????e?s? ?a? d?a??af? µ???µ?t??.
• ??????s? µ???µ?t??.
• ?p?st??? ap??t?s??.
• ???s?µ?p???s? t?? vi ??a d?????se??.
• ???es? a??e??? se ??p??? µ???µa.
• S??t?µ???af?e? (aliases) ??a ??a ???st?.
• S??t?µ???af?e? ??a ?µ?da ???st??.

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?? a??e?? .mailrc

• ?e????e? s??t?µ???af?e? d?e????se?? ???st?? ?
  ?a? ?µ?d?? ???st??.
• ???pe? ?a pe????eta? st? "Home Directory" t??
  ???st?.
• ?a?at??eta? ??a pa??de??µa e??? t?t???? a??e???.

alias gpco gpco_at_le.infn.it alias tml
tliakopo_at_ddt.eng.UC.EDU alias losal
nucl-th_at_xxx.lanl.gov alias ackerman
daa_at_physics.att.com alias kleinfeld
dk_at_physics.att.com alias kwok phskty_at_physics.emory
.edu alias gang iel_at_cs.uoi.gr joo_at_cc.uoi.gr
lt_at_purdue.edu
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Ef?s?? ?p???e? t? a??e?? .mailrc t??
p??????µ???? pa?ade??µat??
? e?t??? mail gpco e??a? ?s?d??aµ? µe
t?? mail gpco_at_le.infn.it
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??????µµata d??t???

• telnet
• G?a s??des? se ap?µa???sµ????? ?/?
• ftp
• G?a µetaf??? a??e??? ap? ??a? ?/? se ?????.
• talk
• G?? s???µ???a d?? ???st?? d?af??et???? ?/?.

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telnet

• telnet zeus.cs.uoi.gr

? ?s?d???µ??
telnet 193.92.5.11

• ?p?t?????e? s??des? µe t?? ?/? p?? a?t?st???e?
  st?? d?e????s? p?? a??????e?.
• St?? s????e?a ? ???st?? e?te?e? t?? d?ad??as?a
  login ?a? a????e? ?a e????eta? st?? ap?µa???sµ???
  ?/? µ?s? t?? d??t???.

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ftp

• ftp zeus.cs.uoi.gr

• ftp 193.92.5.11

S??d?eta? ? ???st?? st?? ?/?. zeus.cs.uoi.gr µe
s??p? t?? µetaf??? a??e???.
??e???eta? d??????? ?a? ? ???st?? e?s??e? t??
apa?a?t?te? p????f???e? ??a t?? s??des?. (Login
name ?a? password )
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talk

• S??t?sseta? ??
• talk john_at_zeus.cs.uoi.gr
• ??t? s???µ???a µe t?? ???st? john,
  eµfa?????ta? ??a µ???µa st?? ????? t??.
• ? ???st?? john p??pe? ?a e?s??e? a?t?st???a µ?a
  e?t??? t?? t?p?? talk jimmy_at_ecn.purdue.edu
  ??a ?a a???se? ? ep????????a.