Answer Posted / alf55

The command:

ifconfig -a | (grep -E 'Link encap:|inet6 addr|inet addr:' |
grep -vE 'inet addr:|inet6 addr')

Would result with an output similar to:

eth0 Link encap:Ethernet HWaddr 00:90:f5:b7:6a:1c
lo Link encap:Local Loopback
sit0 Link encap:IPv6-in-IPv4
wlan0 Link encap:Ethernet HWaddr 00:24:d7:a7:16:c0

So the command:

ifconfig -a | (grep -E 'Link encap:|inet6 addr|inet addr:' |
grep -vE 'inet addr:|inet6 addr') | wc -l

would produce the count.

The problem here is that it would also count usages such as
"eth0:0".

To not count those devices use:

ifconfig -a | (grep -E 'Link encap:|inet6 addr|inet addr:' |
grep -vE 'inet addr:|inet6 addr:|:[0-9][0-9]*') |wc -l

What does df command do in linux?

548

---

What does rmdir do in linux?

541

---

What does chmod 777 do?

590

---

You want to verify which lines in the file kickoff contain ‘bob’. Which of the following commands will accomplish this?

587

---

What is the difference between command ‘ping’ and ‘ping6’?

532

---

---

Which command is used to see the online manual?

610

---

Which command will show you free/used memory?

560

---

What does cd do in linux?

655

---

How can we increase disk read performance in single command in Linux?

567

---

What is make command in linux?

550

---

How do I check memory usage on linux?

566

---

How lilo is useful in linux?

573

---

Is llvm a compiler?

546

---

What the command used for search file or files for specific text?

501

---

Which command would you use if you want to remove the password assigned to a group?

528

---