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    <p>You can use the <code>commandArgs</code> function to get all the options that were passed by Rscript to the actual R interpreter and search them for <code>--file=</code>. If your script was launched from the path or if it was launched with a full path, the <code>script.name</code> below will start with a <code>'/'</code>. Otherwise, it must be relative to the <code>cwd</code> and you can concat the two paths to get the full path.</p> <p><b>Edit:</b> it sounds like you'd only need the <code>script.name</code> above and to strip off the final component of the path. I've removed the unneeded <code>cwd()</code> sample and cleaned up the main script and posted my <code>other.R</code>. Just save off this script and the <code>other.R</code> script into the same directory, <code>chmod +x</code> them, and run the main script.</p> <p><b>main.R</b>:</p> <pre><code>#!/usr/bin/env Rscript initial.options &lt;- commandArgs(trailingOnly = FALSE) file.arg.name &lt;- "--file=" script.name &lt;- sub(file.arg.name, "", initial.options[grep(file.arg.name, initial.options)]) script.basename &lt;- dirname(script.name) other.name &lt;- file.path(script.basename, "other.R") print(paste("Sourcing",other.name,"from",script.name)) source(other.name) </code></pre> <p><b>other.R</b>:</p> <pre><code>print("hello") </code></pre> <p><b>output</b>:</p> <pre><code>burner@firefighter:~$ main.R [1] "Sourcing /home/burner/bin/other.R from /home/burner/bin/main.R" [1] "hello" burner@firefighter:~$ bin/main.R [1] "Sourcing bin/other.R from bin/main.R" [1] "hello" burner@firefighter:~$ cd bin burner@firefighter:~/bin$ main.R [1] "Sourcing ./other.R from ./main.R" [1] "hello" </code></pre> <p>This is what I believe dehmann is looking for.</p>
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    1. COWhat's with the downmod?
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    2. COI downmodded because your technique doesn't work with `source` as I thought the OP wanted - but maybe I misread his/her requirement. But I can't un-downmod :( Sorry!
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    3. COBut actually, it does work fine with source! Just source(other.name) and it works properly.
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