Shell Programming and Scripting

Dear all,
I'm a newbie in programming and I would like to know if it is possible to parallelize the script:

Code:

for l in {1..1000}
do
cut -f$l quase2 |tr "\n" "," |sed 's/$/\
/g' |sed '/^$/d' >a_$l.t
done

I tried:

Code:

for l in {1..1000}
do
cut -f$l quase2 |tr "\n" "," |sed 's/$/\
/g' |sed '/^$/d' >a_$l.t &
done

But it was showed a message "fork: Resource temporarily unavailable"

Is it possible to do something? I need to do this because the number of columns of the real file is too long. So, the work it will be impossible to do in the current way.

Thanks in advance

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