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Re^6: How to execute external programs from perl script

by chak9988 (Initiate)
on Feb 04, 2011 at 18:42 UTC ( #886269=note: print w/replies, xml ) Need Help??

in reply to Re^5: How to execute external programs from perl script
in thread How to execute external programs from perl script

system 'echo "r\ny\nr" | phylip sub_program_1';

Hurray... it runs perfectly well :-) Your observation, to include "\n" after each alphabet is correct way to run "phylip"

you wrote in Re^3..
Try system 'echo "rYr" | phylip sub_program_1'; or system 'echo -e "r\nY\nr" | phylip sub_program_1';

By giving "\n" and "- e", "phylip" was overfed. So, It didn't work that time.

After you have explained function of "-e" and "-n" in Re^5, I removed "-e" and it worked perfectly well.

I appreciate your help,



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Corion idly wonders if there is a way to produce ordered .yml files. I want to accept YAML for a configuration file format, but I also want to generate (for debugging/start) a sample configuration file from the current configuration.
[Corion]: Ideally, that configuration file would have some order of the keys, but I'm not sure whether/how YAML supports ordered output.
[Corion]: Basically I have this metadata and generating a purposeful example is much better if the output is ordered in the same way the documentation is ordered

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