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Append data to file

gs748

Hello,

I am invoking a Perl program test.pl in Skill script and I am trying to append data to a file by using following print statements in skill and perl. Print statements from the perl.pl are not written to "out" file.

Can you please help me to determine where I am wrong with the below syntax. Thank you!

out = outfile("./out")
poport = out
printf("PASS\n")
printf("FAIL\n")
system("perl test.pl >> out")

  • This is a slightly dubious approach - better to do:

    out=outfile("./out")
    fprintf(out "PASS\n")
    fprintf(out "FAIL\n")
    close(out)
    system("perl test.pl >> out")

    I wouldn't go setting poport to out unless there is a really good reason - you have to do that very carefully to avoid breaking things. Secondly, having two processes writing to the file at the same time is not a good idea - because SKILL would think it knows where the end of the file is and when it ultimately closes the file, it would have truncated it at that point. Thirdly you'd probably need to drain() the port before you tried writing to it - but even then I doubt that would work.

    Note that if you're going to want to do the above repeatedly and append to the same file, you can pass "a" as the second argument to outfile to tell it to append to the file rather than overwrite.

    Regards,

    Andrew.

  • Hi Andrew, Passing "a" as the second argument to outfile did the trick. Thanks for additional info, I will keep a note of poport! Thanks.

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