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POHow to (terminal) cd in folder from ruby script
 

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  1. POHow to (terminal) cd in folder from ruby script
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    <p>I'd like to know if it's possible to change the current terminal directory from where I'm executing my ruby script.</p> <p>For example, if I'm executing the script from <code>$HOME</code> in the terminal, I would like to cd in <code>$HOME/mydir</code> at the end of the script. </p> <p>I've tried a couple of things, but I'm always finding in the same directorry where the script was started.</p> <p>Things I've tried:</p> <pre><code>Dir.chdir( mydir ) %[cd mydir] </code></pre> <p>They actually do change directory, but only in the thread of the script execution. When the script ends, my current location in the terminal is still the same I was before launching the script.</p> <p>I've found something similar in SO, but it's <a href="https://stackoverflow.com/questions/2799256/cd-terminal-at-a-given-directory-after-running-a-python-script">Python-related</a> and response seems negative.</p> <hr> <p>You may ask why?</p> <p>I'm currently involved in a command line application (using <code>gli</code>) which, as starting point, needs a project folder. So my first command looks like:</p> <pre><code>$ myfoo new project </code></pre> <p>Which creates a new folder with name <code>project</code> in the current directory. Now to be able to work with the other commands I need to:</p> <pre><code>$ cd project project$ myfoo domore </code></pre> <p>So I was <em>simply</em> thinking that it would be nice to found my self in <code>project</code> after having executed <code>myfoo new project</code>.</p> <hr> <p>As I was afraid, it's not that easy (not possible at all). So what about using a bash script which does the ruby calls that I want, in place of the standard file generated by RubyGems? Is that feasible? Am I foolish? Should I use <code>eval</code>?</p> <hr> <p>Thanks for the answers. But I'm afraid that no one is acceptable. Probably the question wasn't :).</p>
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    1. COIt seems unlikely you would be able to do this. Any system calls from ruby operate in a different thread from your script/shell, and would have no effect on the current location. What are you hoping to use this for?
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    2. CO@Douglas-F-Shearer: I've extended my reasons a bit in the answer
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    3. COjust out of curiosity, why didn't my answer work? I've used this technique a couple times, and I'm unclear how it doesn't suit your situation.
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