Hello Everyone,
I am looking for help in figuring out exactly what I need to do and if someone can help me figure it out, it would get me out of a huge jam. I am including what i'm being asked to do and will show an example I was given, I was told that the example could be altered to do what is asked below, I just don't understand this script stuff at all.
Ty,
Chris
Case – switch 2, 9 points (3 if it runs correctly, 5 if all components are included and 1 for
comments) and yes we live in a partial credit world.
This project is an extension of the case and switch assignment from last week. We have
used all the elements of this script in prior homework projects, puzzles and/or scripts.
This time around everything is a choice in a case switch script.
Your shell script will use case and switch and should include the following elements:
some kind of conditional test to proceed (date, verify users is logged, etc)
request the user’s name (save as a variable to be used at exit)
a counter that counts the number of total choices made by the user
a use of the cut command (cut a field from you friends list or some other file)
an option to run 5 different commands (ls, who, ping etc) and
on exiting the script, echo the user’s name, user inputs (you will want to save
these as varialbes and how many choices the user made).
Comments MUST be included in the script! Your script should be easy for anyone to run
without the need of prompting from you, the developer.
Email a copy and leave an executable copy in the appropriate homework directory.
Remember, by reading your comments I should be able to see exactly what your script is
doing (or suppose to do). Why use comments? Comments force you to think through the
scripting process. Scripting could be considered a mechanical process of converting your
comments into UNIX commands.
*** READ the following paragraph to help you with your puzzle!!
Trouble shooting your script (in case you need it)…. This script has more elements and
more potential to bonk, crash, not work. What you should do is start with the BASIC C-S
script and start adding elements to the known to work script. If the script bonks and
before you declare yourself “lost”(remember lost is a television show!), comment out newly
added lines until the script works again. Now you have a block of code that needs to be
carefully reviewed. If we were sitting in a face-to-face class this is exactly the process we
[YOU] would be asked to do. Start with a simple script (the frame work from last week is
a good starting point) and develop it from there, don’t forget to make copies of your work
along the way!!
#! /bin/csh
echo "Enter the month date"
set a = ($<) frugard
set date = `date | cut -f 3 -d ' '` #date command cut to the date
if ( $a == $date ) then #if correct date entered
echo "What's your first name ?" #ask for name
set b = $< #setting variable
echo "Hello $b "
else
echo "I'm sorry that is not correct."
exit 0
endif
@ h = 0 # declaring the variables
@ i = 0
@ j = 0
@ k = 0
@ l = 0
@ z = 0
set e = /home/fall_05/user-name/HW/11-22 #path
set f = $e/menu #set variable for menu
while (1)
top:
clear
cat $f #cat menu
echo -n "Enter your choice "
set a = $< #set variable for choice
#set z = 1 # the counter wouldn't work until I defined the
variable
switch ( $a )
case [aA]: #case a
@ h = 1 # h is equal to 1 this sets the variable
for listing inputs
ls #command
@ z = $z + 1 #The counter
sleep 2
goto top
case [bB]:
@ i = 1
who
@ z = $z + 1
sleep 2
goto top
case [cC]:
@ j = 1 last |grep $b |wc -l
@ z = $z + 1
sleep 2
goto top
case [dD]:
@ k = 1
finger
@ z = $z + 1
sleep 2
goto top
case [eE]:
@ l = 1
@ z = $z + 1
echo "Thank you $b for entering $z choices."
echo "You ran the following commands "
if ( $h == 1 ) then
echo "ls " # if h is equal to 1 then echo ls and so
forth following down the line
if ( $i == 1 ) then
echo "who "
endif
if ( $j == 1 ) then
echo "last "
endif
if ( $k == 1 ) then
echo "finger "
endif
if ( $l == 1 ) then
echo "exit "
endif
exit 0
endsw # end switch
end # end while statement #! /bin/csh
#case switch
echo -n "Please enter your name... " #prompts user for name
set name=$< #sets user input to variable
@ i = 0 #counter begins at zero
@ a = 0
@ new = 0
@ f = 0
@ c = 0
@ n = 0
@ z = 0
@ dir = 0
@ address = 0
while (1) #while true
echo $i #counter
clear #clear screen
top: #place holder for goto
cat options #look at option file
@ i = $i + 1 #increment counter at each pass
echo options #echo options to screen
echo -n "Enter your option... " #prompts user for selection
set z=$< #sets user input to variable
switch ($z)
echo "" #inserts a blank line
case [aA] #chosen if user selects option aA
clear
echo -n "Which file would you like to copy? " #prompts user for input
set a=$< #sets user input to variable
echo -n "What is the new filename? " #prompts user for input
set new=$< #sets user input to variable
cp $a $new #copies one file to another
echo -n file $a was copied to $new #displays the file names
echo "" #inserts a blank line
goto top #return to the top and start over
case [bB] #chosen if user selects option bB
clear
echo -n "Which file would you like displayed? " #prompts user for file n
ame
set f=$< #sets user input to variable
if (-e $f) then #if the file exists then
cat $f #cat the file
endif #end if statement
echo "" #inserts a blank line
echo -n "Which column would you like to cut? " #prompts user for column
to cut set c=$< #sets user input to variable
cat $f|tr -s ' ' | cut -f $c -d ' '>duh2 #looks at file, removes spaces,
cuts field and saves as new file
echo "" #inserts a blank line
cat duh2 #look at the edited file
echo "" #inserts a blank line
goto top #return to the top and start over
case [cC] #chosen if user selects option cC
clear
echo -n "Enter the name of the file that you'd like to look at. " #promp
ts user for input
echo "" #inserts a blank line
set f=$< #sets user input to variable
cat $f #performs cat on user input
goto top #return to the top and start over
case [dD] #chosen if user selects option dD
clear #clear screen
loop: #place holder
cat options1 #look at the options1 file for additional option
s
echo options1 #echo the options to the screen
echo -n "Which function would you like to perform? "
set i=$< #sets user input to variable
switch ($i)
case [1]
clear
echo -n "Which directory would you like to look at? " #ls comman
d, prompts for directory
set dir=$< #sets user input to variable.
ls -alF $dir #performs ls on directory from user input
echo "" #inserts a blank line
goto loop #go to loop placeholder
case [2]
clear
echo "" #inserts a blank line
who #performs who
echo "" #inserts a blank line
goto loop #go to loop placeholder
case [3]
echo "" #inserts a blank line
echo -n "What is the address to ping? " #prompts user for addres
s to ping
set address=$< #sets user input to variable
ping $address -c 1 #performs ping, on user input, for one c
ount
echo "" #inserts a blank line goto loop #go to placeholder
case [4]
clear
echo "Who would you like to 'finger'?" #prompts user for name
set n=$< #sets user input to variable
finger $n #performs finger on variable
echo "" #inserts a blank line
goto loop #go to placeholder
case [5]
goto top #go to placeholder
endsw #end switch
case [eE] #chosen if user selects option eE
echo -n "You entered option e, to exit. Goodbye $name! $i options were c
hosen. Your inputs were $z, $a, $new, $f, $c, $n, $dir, $address. " #ec
ho the user's name, how many choices were made and what the inputs were.
#displays which option was entered and exits the
echo "" #inserts a blank line
exit #exit
breaksw #ends
endsw #end the switch
end #end the while statement
