Homework & Coursework Questions

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1. The problem statement, all variables and given/known data:
Write a shell script that allows the user to run the following commands:

Once the user has selected the command, the program should ask the user what options they wish to use with the command (file paths, etc) and pass the command to the appropriate utility program displaying the information to the screen. At the end of the execution of the command, and whatever output is given, the system should pause (the user should be able to see the results) - and then ask the user if they want to continue. If so redisplay the menu, if not end the script.


2. Relevant commands, code, scripts, algorithms:
ps, top, cmp, netstat


3. The attempts at a solution (include all code and scripts):

no clue

4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):

Florida International University, Miami, USA, Professor Meyer, COP3348.

OK, so I am taking an intro Linux course and I am very new to linux. I have been having a tough time when it comes to shell scripting. I know the basic commands and how to create the file and also how to open vi to edit the file. But when it comes to starting the code I just dont know where or how to start. Ive contacted my professor and he suggested I get help through forums so here goes. Im not asking for anyone to do the HW for me I just was hoping someone could help me get a good start and explain it to me. Please, anything helps right now...

OK, just a question: have you ever written any program in any programming language? If so (if not: learn that first, but that would be beyond the scope of such a thread), you sure could explain the (abstract) program flow necessary. Start writing this here and we will work from there.

I hope this helps.

bakunin

I would start by providing a switch like this:

Code:

echo "Please select a program to run"
OPTIONS="ps top cmp netstat"
    select opt in $OPTIONS; do
        if [ "$opt" == "ps" ]; then
                    #logic for ps here
        elif [ "$opt" == "top" ]; then
                    #logic for top here
        elif [ "$opt" == "cmp" ]; then
                    #logic for cmp here
        elif [ "$opt" == "netstat" ]; then
                    #logic for netstat here
        else
                    echo "bad option"
        done
        fi
exit 0

the logic could just be another menu inside of this menu, but in that case, you might want to clear the screen, which is as simple as typing clear. However, if you're working with this, keep in mind that you need to enter the number of the option on the menu, and not the word on the menu. I hope this helps.

Code:

echo "Please select a program to run"
OPTIONS="ps top cmp netstat"
    select opt in $OPTIONS; do
        if [ "$opt" == "ps" ]; then
                    #logic for ps here
        elif [ "$opt" == "top" ]; then
                    #logic for top here
        elif [ "$opt" == "cmp" ]; then
                    #logic for cmp here
        elif [ "$opt" == "netstat" ]; then
                    #logic for netstat here
        else
                    echo "bad option"
       fi
     done
 exit 0