Hi guys;
I want to write some text at the first line of an output file. The output
file will be used for other software. In particular, the following text
"ampl.tab 2 1" needs to be added to the first line of an df output file.
As a hypothetic example, the output in text file should be like:
ampl.tab 2 1
A B
2 3
4 6
2 0
Thanks for help.
Yihsu
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