> I need something like that:
> [...]

   As usual, many things are possible.  For reading data from a file,
"read" (a shell built-in) is popular.  For example:

alp$ cat c2.dat
line=1;col=1 line=1;col=2
line=2;col=1 line=2;col=2
line=3;col=1 line=3;col=2

alp$ cat c2.sh
#!/bin/sh

while read col1 col2 extra ; do
    echo "col1: >${col1}<"
    echo "            col2: >${col2}<"
done

alp$ ./c2.sh < c2.dat
col1: >line=1;col=1<
            col2: >line=1;col=2<
col1: >line=2;col=1<
            col2: >line=2;col=2<
col1: >line=3;col=1<
            col2: >line=3;col=2<

(For a good time, try data with more than two columns, and see what's in
"extra", too.)

   If "man sh" doesn't help, then a Web search for keywords like, say:
      shell read file
might.