Question

i need generate number values and uses that values on curl. i have done this but the code have some faults because can’t generate the numbers.

#!/bin/bash

for a in $(seq 0 9)
do
pass[0]="$a"
   for b in $(seq 0 9)
   do
   pass[1]="$b"
        for c in $(seq 0 9)
        do
        pass[2]="$c"
            for d in $(seq 0 9)
            do
            pass[3]="$d"
                for e in $(seq 0 9)
                do
                pass[4]="$e"
                    for f in $(seq 0 9)
                    do
                    pass[5]="$f"
                   curl -d "$a$b$c$d$e$f" somesite.php
                    done
                done
             done
         done    
     done
done

i get this output:

   echo ${pass[*}
>                     done
> 
Display all 289 possibilities? (y or n)
> e
>              done
>          done    
>      done
> done
> ^C

Answer 1

Simpler (but still ghastly):

for a in $(seq 0 9)
do
    for b in $(seq 0 9)
    do
        for c in $(seq 0 9)
        do
            for d in $(seq 0 9)
            do
                for e in $(seq 0 9)
                do
                    for f in $(seq 0 9)
                    do
                        curl -d "$a$b$c$d$e$f" somesite.php
                    done
                done
            done
        done    
    done
done

I’m not convinced that the script you copied to the question is the one you executed. When I do run your script, it executes commands like:

curl -d 0 2 0 8 7 9 somesite.php

Note the spaces; I suspect they are (a) unwanted and (b) largely unavoidable without futzing with IFS, which is worse than fixing the code as I showed. Arrays are great; they aren’t for everything.

Incidentally, it would be simpler (by far) to use:

for number in $(seq -f '%06.0f' 0 1000000)
do
    curl -d "$number" somesite.php
done

or:

seq -f '%06.0f' 0 1000000 |
while read number
do
    curl -d "$number" somesite.php
done

or … there are other ways to do it too (see other answers). The seq | while read loop has the advantage of not needing more than 7 MiB of memory to store the numbers.

It’s going to take a while to curl one million pages.