vi, create a ".addr_book"
data file in your home directory
with the appropriate permissions (so that only the owner can
modify or view the file, group members can view it, and others
have no access).
This file is an address book and
should contain entries for people, businesses, etc.
For example you might have an entry for me:
Wayne Pollock Unix/Linux Instructor Phone: 253-7213, Room T-404
Note that each entry is a single line!
Have at least 3 entries in the file.
(Don't have any blank lines or any comment lines.) bin"
directory within your
home directory, with appropriate permissions so you have access to
all files within, and group members have read-only access to
all files within.
(Be careful setting these directory permissions!) bin" directory isn't already part of
PATH, edit your
login script file so that your new bin directory
appears somewhere in your PATH.
(You will have to login again for the
new PATH to take effect.)
(NOTE!! I've done this step for you
already; just verify your PATH setting is correct using
the commands you have learned.) vi, create a file called "lookup"
(a shell script) in your
bin directory with appropriate permissions
(so you can view or modify or execute your script,
group members can view or execute your script,
and others have no access).
When run, lookup should find
matching entries (lines) from your "$HOME/.addr_book"
file and display them.
For example:
lookup Pollock
should display any line (record) that contains the string
"Pollock".
The output MUST be sorted.
(HINT: use grep, sort, and positional
parameters.
Do NOT use "read"!)
Remember it is far easier to solve this project at the command
line, and only afterwards put the commands into a file
"lookup".
You can try to search for some specific name in your
$HOME/.addr_book file at the command line,
say "Wayne".
When you got the search right, add the command to sort
the result.
When that is working, your are nearly done!
Just put that command line in your ~/bin/lookup
file, add a comment or two, make that file executable, and
try it out.
The result should be exactly the same as when you ran the
command from the command line.
Finally change Wayne to a positional
parameter so your lookup command will
find other people too.
That's it! Add creative extras if you wish.
For full credit your script must include most of the features
discussed in class for a shell script including: setting the
script as a bash shell script, using appropriate comments,
making sure lookup can find the current user's address book file
regardless of the current working directory, making sure lookup
will do
something
sensible1
even if the user fails to type any
arguments to lookup, or types in multiple arguments (such as
"lookup Wayne Pollock").
There is nothing to turn in. You don't need to email your files to me, or do anything else to hand them in. On the due date I will go into your home directory and collect what I need, using my group access to read and grade your work. Be sure all files have the exact names specified here, and be sure to complete the project by the due date.
Send project questions to . Please use the subject "Intro to Unix/Linux Project #6 Questions" so I can tell which emails are questions about the project (and not submissions).
Refer to the Projects and the Submitting Assignments sections of your syllabus for more information.
echo to display your own messages
however.)
And if the user types "lookup Joe Smith",
it isn't sensible to search for all entries with
"Joe", then search for all entries containing
"Smith".
Back