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I used 1019 since you stated the file contains 520 different names, so that the first one is numbered 500 and the last one 1019. Is this what you're looking for?
Regarding your script, you have two nested loops, hence for every x (user) it prints out 500:x, 501:x, ... 519:x, 520:x. Rather you actually need a single loop and a counter to increment at each passage:
Code:
c=500
for x in $(cat $file)
do
echo $c:$x
((c++))
done
Please use [code][/code] tags around your code, to preserve formatting and to improve readability. (You have over a hundred posts, so you should be aware of this by now )
You can turn off smilies when posting too.
Now for some scripting tips:
1) Don't use a for loop when reading from files or commands. Any input with a space in it would break it. Use a while+read loop instead.
2) Useless use of cat. Inside a command substitution $(<filename) does just the same job (well, except that any final newline will be removed). And if you use the while loop I mentioned in #1, you can feed it directly (example below).
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