The commands in the following session perform the required tasks. Note that the ifconfig command is in the /sbin directory and since this directory isn’t in our shell’s search path, the shell could not locate it. By running the command with its full pathname (/sbin/ifconfig), we were able to execute the command successfully. The Maximum Transmission Unit (MTU) for the Ethernet interface (eth0) is 1500 bytes and that of loopback interface (lo) is 16436 bytes.

What will be an ideal response?


```
$ ifconfig
bash: ifconfig: command not found
$ whereis ifconfig
ifconfig: /sbin/ifconfig /usr/share/man/man8/ifconfig.8.gz
$ /sbin/ifconfig
eth0 Link encap:Ethernet HWaddr 00:03:47:A3:BD:39
inet addr:172.28.40.1 Bcast:172.28.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2558850 errors:0 dropped:0 overruns:0 frame:0
TX packets:633415 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:760167446 (724.9 Mb) TX bytes:122578858 (116.9 Mb)
Interrupt:11

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:4905 errors:0 dropped:0 overruns:0 frame:0
TX packets:4905 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:344388 (336.3 Kb) TX bytes:344388 (336.3 Kb)

$
```

Computer Science & Information Technology

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