Executing shell script from ruby script

Question

I have the following:

_shellScript = "../Dependency/test.sh"
exec 'sh #{_shellScript}'

But when I go to execute the ruby script it ends me up at a shell prompt instead of executing the script that is located within the variable _shellScript.

Any ideas would be appreciated!

Your code uses single quotes in the exec string. In single quote strings Ruby does not provide interpolation (#{}). That could aslo be the error. — Linuxios
– Linuxios, Commented Nov 30, 2011 at 23:10

Linuxios · Accepted Answer · 2011-11-30 23:09:26Z

9

In Ruby, exec ends the Ruby process and passes the shell to the child specified. If you need to give all of test.sh's output to your console, you want system("sh #{_shellScript}"). If you need to give data and receive it through stdin and stdout, look at popen.

answered Nov 30, 2011 at 23:09

Linuxios

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2 Comments

mu is too short Over a year ago

I think your comment might be closer to the real problem, the # in 'sh #{_shellScript}' will be seen as a comment so it will be the same as saying exec 'sh' and there's command prompt.

mu is too short Over a year ago

You might be fixing the current bug (single instead of double quotes) and the next one (exec instead of system) at the same time :)

Linuxios · Accepted Answer · 2012-09-28 13:28:28Z

1

Just try the following line:

%x[#{_shellScript}]

edited Sep 28, 2012 at 13:28

Linuxios

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answered Dec 1, 2011 at 0:34

RooSoft

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