Lab Workbook
UNIX: The Textbook
2nd Edition
Chapter 14
NAME:
STUDENT ID:
DATE:
Lab 14
(Chapter 14)
Lab Work
1.
Log on to your UNIX system
2.
What are the IP address, Ethernet address, and domain name of your host? What is the class of your
address and how did you know this? Show the session that you used to obtain answers to your
questions.
3.
Get the IP addresses for the following hosts: cs.berkeley.edu, www.nato.int, www.abc.tv,
www.nasa.gov, www.lumensoft.biz, cnn.com, and mit.edu. If a host has multiple IP address and/or
domain names, list them all, along with the classes of the IP addresses.
HINT: Use the “host” command for each host.
4.
Browse the IETF website, locate the citation for the latest RFC, and write down the following
information about it: RFC number, title, author(s) or editor(s), date submitted, and status.
HINT: IETF website is http://www.ietf.org/rfc.html. Look at “RFC Index”.
5.
Read through RFC 1118 and identify the RFC numbers for the original RFCs that describe the
following protocols: TCP, IP, UDP, ICMP, SMTP, FTP, and Telnet.
HINT: Use google to search for “RFC1118”. If you get tired of reading, look at Appendix B.
6.
Use the telnet command to get the current time from the daytime server running on the Lab
Server 10.1.110.20. Show your session.
HINT: The dayfile service uses port 13. Look at UNIX The Textbook Page 397.
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7.
Use the telnet command to invoke the finger server at iastate.edu and display the number of
users who have Davis as part of their names. Show your session.
HINT: Look at UNIX The Textbook P.397. The finger server at iastate.edu uses port 79.
8.
Use the telnet command to invoke the finger server at iastate.edu, and then use UNIX pipe and
UNIX I/O redirection primitives to save in a file the information returned by the finger server
about users Davis as part of their names. Display the saved information with the more command.
After the first page, terminate the more command. Show your session.
9.
What would you do if you were asked to repeat the task outlined in 8, except that you are to save
information about “Davis, James A” in a file called James.A.Davis? Display contents of the file. Show
your work.
10. Use the traceroute command to obtain the hop count and the time taken for one-way travel of
data from your host to www.jntuh.ac.in. Show your session.
What are the round trip times for the 9th and 10th IP network that was traversed?
Explain the difference in round-trip times.
11. Create a text file containing several lines of student data in a file. Use the vi session shown below.
$ vi smallFile
<Go into insert mode by typing “i”.>
<Copy and paste the text below.>
<Exit insert mode with “<ESC>”>.
John
Doe
ECE
3.54 doe@jd.home.org
James
Davis
ECE
3.71 davis@jd.work.org
Al
Davis
CS
2.63 davis@a.lakers.org
Ahmad
Rashid
MBA
3.74 ahmad@mba.org
Sam
Chu
ECE
3.68 chu@sam.ab.com
Arun
Roy
SS
3.06 roy@ss.arts.edu
Rick
Marsh
CS
2.34 marsh@a.b.org
James
Adam
CS
2.77 jadam@a.b.org
Art
Pohm
ECE
4.00 pohm@ap.a.org
John
Clark
ECE
2.68 clark@xyz.ab.com
Nabeel Ali
EE
3.56 ali@ee.eng.edu
111.222.3333
111.222.1111
111.222.2222
111.222.4444
111.222.5555
111.222.8888
111.222.6666
111.222.7777
111.222.9999
111.111.5555
111.111.8888
3
Tom
Nelson
Pat
King
Jake
Zulu
John
Lee
Sunil
Raj
Charles Right
Diane
Rover
Aziz
Inan
<Esc><Z><Z>
ECE
SS
CS
EE
ECE
EECS
ECE
EECS
3.81
2.77
3.00
2.64
3.36
3.31
3.87
3.75
nelson@tn.abc.org
king@pk.xyz.org
zulu@jz.sa.org
jlee@j.lee.com
raj@sr.cs.edu
right@cr.abc.edu
rover@dr.xyz.edu
ainan@ai.abc.edu
111.111.6666
111.111.7777
111.111.9999
111.111.2222
111.111.3333
111.111.4444
111.111.5555
111.111.1111
The “ssh” command is the secure version of the “rlogin” and “rsh” command. Use “ssh” to execute
the “sort” command on a remote host, 10.1.110.20, on your local network. The username/password
on the remote host is cs206temp/cs206temp. The input file is smallFile from the local host and the
sorted output is placed in file sorted_smallFile on the local host. After executing sort command on the
remote host, show the sorted file using “cat” command. Show your work.
HINT: When connecting to the remote host using “ssh”, use the “-l user” option where “user” is the
login name on the remote host (“cs206temp”).
12. In Problem 11, execute the “sort” command on the remote host, but instead of saving the sorted file
on the local host, save the sorted file on the remote host. Show your work.
NOTE: Since other students in the class will be using the same login, the file saved on the remote host
should have a unique name (i.e. the file name could have your initials).
Login to the remote host using “ssh” and verify the remote host has the sorted file. Show your work.
13. The “scp” command is the secure version of the “rcp” command. Use “scp” to copy the file
sorted_smallFile created in Problem 11 to remote host, 10.1.110.20. The username/password on the
remote host is cs206temp/cs206temp. Show your work.
NOTE: Since other students in the class will be using the same login, the file saved on the remote host
should have a unique name (i.e. the file name could have your initials).
Login to the remote host using “ssh” and verify the remote host has the copied file. Show your work.
14. Log out
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