Simple loop help!!

thurft · #1 (**permalink**) 09-01-11, 15:11

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

Quote:

#!/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

kitaman · #2 (**permalink**) 09-01-11, 21:20

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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