Run a shell command, and capture output in variable?

[Ross Merrifield]

Dylan-lang users,

I am new to Dylan, and I would like to create a simple program to gain a better understanding of the language. The intended program will be a simple wrapper around a shell command. The command-line parser library gets me half way there, but I haven't been able to find a method to run a shell command and capture the output in a variable.

Can this be accomplished in Open Dylan? I have 2020.1 currently installed, but I'll probably install 2022.1 monetarily.  I'm running on Windows 10 64bit if it matters.

Thanks,

Ross

[Ross Merrifield]

Correction: 2022.1 is already installed, not sure why I thought I had 2020

[Peter Housel]

Yes, it can. The code at https://github.com/dylan-lang/opendylan/blob/5603ebe3e93f694ad457403842c17fa56168823a/sources/system/tests/operating-system.dylan#L106 is one of the unit tests for the run-application function, from the operating-system module of the system library. The documentation for that function can be found at https://opendylan.org/documentation/library-reference/system/operating-system.html#system:operating-system:run-application (though it isn't very complete).

-Peter-

[Ross Merrifield]

Thanks Peter, that looks like a good starting point for me.

Ross

[Carl Gay]

https://github.com/dylan-lang/opendylan/blob/5603ebe3e93f694ad457403842c17fa56168823a/sources/system/unix-operating-system.dylan#L171 has much more complete documentation, which I really need to put in the actual docs.

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[Carl Gay]

For completeness: this code comment has been integrated into the docs here: https://opendylan.org/documentation/library-reference/system/operating-system.html#system:operating-system:run-application