Retrieve data from a file

tpltp · #1 (**permalink**) 03-28-2008

Hello guys

I want to retrieve two data from a file, like this:
bash-2.03$ cat numtest
123456
123457
bash-2.03$ more ./test_num
#!/bin/bash
num1=
num2=
cnt=1

while read x
do
num${cnt}=$x
cnt=$(($cnt+1))
done <$1
echo $num1 "\n" $num2

But when i executed this script, error popped up
bash-2.03$ ./test_num numtest
./test_num: num1=123456: command not found
./test_num: num2=123457: command not found
\n

Can anyone give any suggestion? Thank you.

fpmurphy · #2 (**permalink**) 03-28-2008

eval is your friend

Code:

while read x
do
  eval num${cnt}=${x}
  cnt=$(($cnt + 1))
done < $1

tpltp · #3 (**permalink**) 03-28-2008

I will rememer this friend from now on. thank you for introducing him to me.

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