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Re: Unsuccessfully passing arguments to a bash command

by ikegami (Pope)
on Jun 16, 2013 at 05:02 UTC ( #1039174=note: print w/replies, xml ) Need Help??


in reply to Unsuccessfully passing arguments to a bash command

$* reflects the args passed to the function, but you didn't pass any! You merely passed some to bash as you executed the bash command untouchable. You want to execute the bash command untouchable john mike bill, which you can do using
system(q{bash -ic 'untouchable john mike bill'});
or better yet,
system('bash', '-ic', 'untouchable john mike bill');

The latter launches bash directly instead of launching a sh to launch bash.

If the names are variable, you want:

use String::ShellQuote qw( shell_quote ); system('bash', '-ic', shell_quote('untouchable', @names));
or
system('bash', '-ic', 'untouchable "$@"', '-', @names);

If I run untouchable from the command line, it works as expected.

But running the command you passed to system wouldn't have.

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[Corion]: Lo and behold, running a program with the correct input files yields the correct (and expected) output. Yay me.
[1nickt]: Got a MacBook and am expected to develop directly on it, ironic given the recent thread about that.
[marto]: Corion, some not too serious issues with the kids, hopefully, other than that just dealing with commuting by car again in the winter, not much fun so far, and there's no real 'bad' weather yet :)
[marto]: 1nickt, glad to hear it, I'm sure you'll bring improvements to their stack in due course ;)
[1nickt]: Just trying to adjust to a new culture. Better doc than I am used to , but quite a bit more Agiley meta-bullshit; at least half a dozen meetings a week, strict "sprint" schedule etc. I'll adjust. And I hope to just switch off after the "scrum" each day at
[1nickt]: ... the end of the afternoon. marto How are you, snowed in? Mum and Dad expecting snow today in Surrey. (Have 5" on the ground here in NJ. And my son's high school in SOCal closed until after Xmas due to fires.)
[Corion]: 1nickt: In a sense the meta-bullshit might even be beneficial to you as you get to hear the cow-orkers talk (or not talk) about the issues you perceive. I think Agile is mostly about the meta ;)
[Corion]: 1nickt: On Sunday maybe 10cm of snow fell, and the airport closed, and the trains stopped running etc :) It always comes as a surprise that snow falls here during the winter...
[marto]: 1nickt, no snow, just some ice on the roads and the usual idiocy associated with humans and driving in less than ideal conditions

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