I have printable text in a file (header.txt):
*******************
* $string
*******************
and I have the script (generate.sh):
prn_header () {
string=$1
echo $(<header.txt)
}
prn_header I_want_this_text_for_the_header
and the output is exactly the same like the header.txt.
My problem is: how can I get the template from a file, but substitute the needed variable in it before printing?
In real, I have many text pieces in files, and the result builded from them.
