Elementi di amministrazione di rete da shell Linux e Windows
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• # hostname nome
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• D191"<+@19;1T&
– #B9'&'9;1"$<88'<&-'&"1;1&C<&)9&?"#?"'#&'9-'"'((#&7!A&
– )9S'9;1"$<88'<&-'&"1;1&-'&)9&1+<H#"<;#"1&?)U&8#@)9'8<"1&8#9&
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– 7W&X&7!&R/Y&Z&
• [>%&7!&X&5\6%5V]%^%5,&ZX644%644%644%_&XX`&7W&X&5\6%5V]%^%_&&
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• R&=)1>;<&"1;1&0'";)<+1&'91>'>;19;1&>'&<881-1&?1"&@1((#&-'&
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• +S'9-'"'((#&)*+'((<;#&b&>1@?"1&+#&>;1>>#,&56^%_%_%5&&
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• ifconfig [interfaccia]
• ifconfig [interfaccia ...
[famiglia_indirizzamento] [indirizzo] opzioni]
• c,/"#(01S&0'191&)*+'((<;#&?1"&<:0<"1&1&@<9;191"1&'+&>'>;1@<&-1++1&
'9;1"$<881&-'&"1;1&"1>'-19;1&91+&a1"91+%&&
• d'191&)*+'((<;#&<+&@#@19;#&-1++S<00'#&&
• Y#?#,&0'191&)*+'((<;#&-'&>#+';#&>#+#&<&>8#?#&-'<B9#>*8#&#&=)<9-#&
>#9#&9181>><"'1&-1++1&"1B#+<('#9'%&&
• e1&9#9&019B#9#&$#"9'*&<"B#@19*,&#??)"1&>1&019B#9#&'9-'8<;1&>#+#&
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234355& 5_&
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• g&,/"#(01-.#-234565652-
– R:0<&+S'9;1"$<88'<&c.#S&8#""'>?#9-19;1&<+&!""#$%&'(8#9&'+&
9#;#&'9-'"'((#&7!&56^%_%_%5%&
• g&,/"#(01-*786-29352:;5252-(*7<=>?-3@@53@@53@@56-
– R:0<&+S'9;1"$<88'<&c*786S&8#""'>?#9-19;1&<++<&?"'@<&>8C1-<&
[;C1"91;,&8#9&+S'9-'"'((#&7!&5\6%5V]%5%5&1&+<&@<>8C1"<&-'&
"1;1&644%644%644%_%&
• h&A>B,(A,/"#(01-*786-
– [@1.1&+<&>';)<('#91&-1++S'9;1"$<88'<&c*786S&8#""'>?#9-19;1&
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• h&A>B,(A,/"#(01-
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234355& 56&
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• ipconfig [/all] [/renew [Adapter]] [/release [Adapter]] [/displaydns]
• Z#>;"<&&'&0<+#"'&8#""19*&-'&8#9QB)"<('#91&-'&"1;1&1&"'9$"1>8<&+1&
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• tB9'&1+<H#"<;#"1&8C1&)*+'((<&+<&"1;1&-101&><?1"1&
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• D+'&1019;)<+'&?1"8#">'&>)881>>'0',&019B#9#&-1Q9'*&-<&
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• e'&;"<.<&-'&8#>;")'"1&)9<&)%$*!!%(+,(,-.)/%+%0*-)",&
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234355& 5\&
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234355& 6_&
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• F1&0#8'&1+1@19;<"'&>#9#&'9>1"';1&<);#@<*8<@19;1&-<&ifconfig
• !1"&)9<&B1>*#91&?'u&8#@?+1;<,&>'&?)U&)><"1&route%&
• [>1@?'&
– g&$#I7*-=%%-J8#>7-234565652-%*)-.#-
• R:0<&+S'9>;"<-<@19;#&01">#&+S'9;1"$<88'<&+#8<+1&!""#$%&'%&
– g&$#I7*-=%%-J(*7-29352:;5256-(*7<=>?-3@@53@@53@@56-%*)-
*786-
• R:0<&+S'9>;"<-<@19;#&-1++<&"1;1&5\6%5V]%5%_&8C1&)*+'((<&+<&@<>8C1"<&-'&
"1;1&644%644%644%_,&>?18'Q8<9-#&8C1&"'B)<"-<&+S'9;1"$<88'<&-'&"1;1&c*786S%&
– h&$#I7*-
• Z#>;"<&+<&;<H1++<&-'&'9>;"<-<@19;#&<.)<+1%&
234355& 65&
&79;1>;<('#9'&-1++<&;<H1++<&-'&'9>;"<-<@19;#%&
234355& 66&
"#);1&
• route [-f] [-p] [Command [Destination] [mask Netmask] [Gateway] [metric Metric]] [if
Interface]]
• Z#>;"<&1&@#-'Q8<&+1&'>;<9(1&-1++<&;<H1++<&-'&"#)*9B&7!&+#8<+1%&E><;#&
>19(<&?<"<@1;"',&"#);1&@#>;"<&+jC1+?%&
234355& 6P&
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;k?1T&
$#I7*-%*.*7*-265M25656-<=>?-3@@53@@5656-
234355& 64&
!'9B&
• ping [opzioni] indirizzo
– cC,(1S&?1"@1.1&-'&'90'<"1&)9<&"'8C'1>;<&-'&18#&<&)9&'9-'"'((#,&)*+'((<9-#&'+&?"#;#8#++#&7JZ!,&01"'Q8<9-#&
-'&"'8101"1&;<+1&18#&'9&@#-#&8#""1.#&XX`&'9>;"<-<@19;#&$)9('#9<9;1&&
– cC,(1S&0'191&)><;#&=)<>'&>1@?"1&>19(<&#?('#9',&'9&@#-#&-<&#.191"1&)9<&"'8C'1>;<&-'&18#&8#9*9)#,&<&
'9;1"0<++'&-'&)9&>18#9-#,&8C1&?)U&1>>1"1&'9;1""#.<&<."<01">#&+<&;<>*1"<&8#9&+<&8#@H'9<('#91&n&1)/!2&(o%&
• [>1@?'#&
– h&C,(1-29352:;5252-
• 790'<&)9<&"'8C'1>;<&-'&18#&<++S'9-'"'((#&5\6%5V]%5%5,&<&'9;1"0<++'&"1B#+<"'&-'&)9&>18#9-#,&Q9#&<&8C1&"'8101&)9&
>1B9<+1&-'&'9;1"")('#91%&
234355& 6V&
?'9B&
• ping [-t] [-a] [-n Count] [-l Size] [-i TTL] [-r Count] [{-j HostList }] [-w Timeout] [TargetName]
• d1"'Q8<&<&+'01++#&7!&+<&8#991:0';v&8#9&)9&<+;"#&8#@?);1"&'90'<9-#&
@1>><BB'&7JZ!&K79;1"91;&J#9;"#+&Z1>><B1&!"#;#8#+L&-'&3&4"(5*67*.)8(
Z#>;"<&+<&"'810);<&-1'&@>B&-'&3&4"(5*#!9(8#""'>?#9-19*,&'9>'1@1&<'&
"#)9-f;"'?&*@1>%&!'9B&b&'+&8#@<9-#&?"'@<"'#&)><;#&?1"&01"'Q8<"1&
8#991:0';v,&"<BB')9B'H'+';v,&1&"'>#+)('#91&-1'&9#@'%&E><;#&>19(<&
?<"<@1;"',&C,(1&@#>;"<&+jC1+?%&
234355& 6^&
DK=<C.*>-
IC1&$#++#N'9B&1G<@?+1&>C#N>&?'9B&8#@@<9-&#);?);T&
JTw`?'9B&1G<@?+1%@'8"#>#x%8#@&
!'9B'9B&1G<@?+1%@'8"#>#x%8#@&n5\6%5V]%6P\%5P6o&N';C&P6&Hk;1>&#$&-<;<T&
W1?+k&$"#@&5\6%5V]%6P\%5P6T&Hk;1>XP6&*@1X5_5@>&IIFX562&
W1?+k&$"#@&5\6%5V]%6P\%5P6T&Hk;1>XP6&*@1X5__@>&IIFX562&
W1?+k&$"#@&5\6%5V]%6P\%5P6T&Hk;1>XP6&*@1X56_@>&IIFX562&
W1?+k&$"#@&5\6%5V]%6P\%5P6T&Hk;1>XP6&*@1X56_@>&IIFX562&
234355& 6]&
I#&?'9B&;C1&-1>*9<*#9&5_%_%\\%665&<9-&"1>#+01&5_%_%\\%665&;#&';>&C#>;&9<@1,&;k?1T&
C,(1-J=-26565995332-
I#&?'9B&;C1&-1>*9<*#9&5_%_%\\%665&N';C&5_&[8C#&W1=)1>;&@1>><B1>,&1<8C&#$&NC'8C&C<>&<&
Y<;<&Q1+-&#$&5___&Hk;1>,&;k?1T&
C,(1-J(-26-J.-2666-26565995332-
I#&?'9B&;C1&-1>*9<*#9&5_%_%\\%665&<9-&"18#"-&;C1&"#);1&$#"&2&C#?>,&;k?1T&
C,(1-J$-M-26565995332-
I#&?'9B&;C1&-1>*9<*#9&5_%_%\\%665&<9-&>?18'$k&;C1&+##>1&>#)"81&"#);1&#$&
5_%56%_%5f5_%6\%P%5f5_%5%22%5,&;k?1T&
C,(1-JO-265235652-265395N52-26525MM52-26565995332--
234355& 6\&
RW!&
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carpS&?1"@1.1&-'&'>?1('#9<"1&1&-'&@#-'Q8<"1&+<&;<H1++<&RW!&-1+&>'>;1@<%&
# arp -a
[+198<&;).1&+1&0#8'&<88)@)+<;1&91++<&;<H1++<&RW!%&
# arp -a 192.168.1.2
Z#>;"<&+1&0#8'&"'$1"';1&1>8+)>'0<@19;1&<+&9#-#&5\6%5V]%5%6%&
# arp -n -a 192.168.1.2
J<981++<&+1&0#8'&"'$1"';1&<+&9#-#&5\6%5V]%5%6&8#9;19);1&91++<&;<H1++<&RW!%&
# arp -s 192.168.1.2 00:01:02:03:04:05
R>>1B9<&?1"@<919;1@19;1&K?1"&+<&-)"<;<&-1+&$)9('#9<@19;#&-1+&>'>;1@<L&+S'9-'"'((#&
[;C1"91;&__T_5T_6T_PT_2T_4&<++S'9-'"'((#&7!&5\6%5V]%5%6%&
234355& P_&
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• arp [-a [InetAddr] [-N IfaceAddr]] [-d InetAddr [IfaceAddr]] [-s InetAddr EtherAddr [IfaceAddr]]
• Z#>;"<&1&@#-'Q8<&+1&'>;<9(1&?"1>19*&91++<&8<8C1&RW!KR--"1>>&
W1>#+)*#9&!"#;#8+L,&8C1&8#9*191&)9<&#&?'u&;<H1++1&)><;1&?1"&><+0<"1&
'9-'"'(('&7!&1&"'>?%&79-'"'(('&Q8'&y&[;C1"91;&#&I#a19&W'9B&y&"'>#+*%&Jjb&)9<&
;<H1++<&?1"&#B9'&<-<?;1"&[;C1"91;&#&I#a19&W'9B&&'9>;<++<;#&>)+&8#@?);1"%&&
E><;#&>19(<&?<"<@1;"',&=$C&@#>;"<&+jC1+?%&
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Nota: l’errore questa volta è diverso, eth0 è configurata ma il problema questa volta è la risoluzione del nome
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Proviamo a vedere cosa succede se cancello i riferimenti dal file /etc/resolv.conf
Per modificare il file ho semplicemente invocato un editor Nell’esempio riportato nella figura: nano /etc/resolv.conf - Cancello entrambe le righe dal file
- Salvo ed esco
Cosa accadrà se provo ad eseguire il comando ‘ping www.google.it’? Perché?
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