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  1. #1
    Join Date
    Sep 2011
    Posts
    1

    Unanswered: Simple loop help!!

    Ok
    basically Im stuck at what i believe is something really simple but i just dont ahve a clue how to do it efficiently and properly and i REALLY appreciate some help

    Basically i have a loop at which someone has to enter a string of 3 numbers,
    I want the code to check that the string is numbers only, check that the numbers have not been already signed to someone else in the users.db file and to restrict the number of numbers to only 3.

    and each time the user inputs the number wrong i want it to be allowed to correct and tell why he has to re enter it.

    This is the best i could came up with but IM REALLY suck and im at a short UNIX course (1 week) for a job....

    Can anyone please tell how do i make the loop properly??

    this is the best i could came up with... and i KNOW is crap... but i just dont know best........ I would really appreciate some guidance plz

    thanks

    #!/bin/bash
    echo -e "Create a new record\n"

    fSID (){
    read -p "Please enter staff ID: " cSID
    }

    fSID

    gcSID=$(grep $cSID users.db | cut -d ":" -f1 | tr [":"] [" "])
    wcSID=$(echo $cSID | wc -c)

    case "$cSID" in
    [!0-9]* ) echo -e "The staff ID should contain only digits\n "
    sleep 0.5
    fSID;;

    esac
    while [ $wcSID -gt 4 ]; do

    read -p "Please enter a value: " cSID
    wcSID=$(echo $cSID | wc -c)
    echo $wcSID
    done
    read -p "u passed to stage 2! gratz" st2

  2. #2
    Join Date
    Sep 2009
    Location
    Ontario
    Posts
    1,057
    Provided Answers: 1
    You have to finish this:

    Code:
    acceptable=N
    while acceptable = N
    do
      echo "enter user id \c"
      read user
      if $user passes numeric tests
         acceptable=Y
      fi
      if acceptable = Y
        grep $user user.db
        if $? = ???????
          acceptable=N
       else
         echo $user >>user.db
         echo $user is acceptable, and added to userdb
       fi
    done

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