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    <p>How about a Python script? This shortens the longest directory names first, one character at a time until it meets its length goal or cannot get the path any shorter. It does not shorten the last directory in the path.</p> <p>(I started writing this in plain shell script but man, bash stinks at string manipulation.)</p> <pre><code>#!/usr/bin/env python import sys try: path = sys.argv[1] length = int(sys.argv[2]) except: print &gt;&gt;sys.stderr, "Usage: $0 &lt;path&gt; &lt;length&gt;" sys.exit(1) while len(path) &gt; length: dirs = path.split("/"); # Find the longest directory in the path. max_index = -1 max_length = 3 for i in range(len(dirs) - 1): if len(dirs[i]) &gt; max_length: max_index = i max_length = len(dirs[i]) # Shorten it by one character. if max_index &gt;= 0: dirs[max_index] = dirs[max_index][:max_length-3] + ".." path = "/".join(dirs) # Didn't find anything to shorten. This is as good as it gets. else: break print path </code></pre> <p>Example output:</p> <pre><code>$ echo $DIR /this/is/the/path/to/a/really/long/directory/i/would/like/shortened $ ./shorten.py $DIR 70 /this/is/the/path/to/a/really/long/directory/i/would/like/shortened $ ./shorten.py $DIR 65 /this/is/the/path/to/a/really/long/direc../i/would/like/shortened $ ./shorten.py $DIR 60 /this/is/the/path/to/a/re../long/di../i/would/like/shortened $ ./shorten.py $DIR 55 /t../is/the/p../to/a/r../l../di../i/wo../like/shortened $ ./shorten.py $DIR 50 /t../is/the/p../to/a/r../l../d../i/w../l../shortened </code></pre>
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    1. COI was just writing a python script that's quite similar to this one. Mine does a bit more recursion, is slightly more efficient, and utterly fails to stop truncating when the desired length is reached. Therefore, I'm not going to bother finishing and posting it unless somebody cares. :-/
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    2. CONice. My only concern is the cost of executing a python script on every shell execution. I'll give it a try and let you know.
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    3. COIf it's too slow let me know, it can certainly be made faster if needed.
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