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    <p>Because coming up with the personal favourite solution is big fun, I'll join in:</p> <h3>Solution (Spoiler)</h3> <h2>@user unknown:</h2> <p>I know you're trolling, but in the interest of casual readers: I admit that the inline expansions there are not safe indeed. I was really showing how I had intended to use the commands (ls, find, uniq) etc. in combination. It can be made safe:</p> <pre><code>find -type f -printf '%f\0' | sort -uz | xargs -0i -n1 find -name {} -printf "%f:%p\n" </code></pre> <p>The formatting is slightly less convenient now (then again, <em>how</em> would you format it with special characters in the pathnames?). The question says little on that subject, so...</p> <hr> <p><em>One final note:</em></p> <p><code>the first read is already broken with (...) blanks in filenames</code></p> <ul> <li><strong>untrue</strong> <code>while read</code> is only broken with newlines, try it: <code>read line &lt;&lt;&lt; "a b c" &amp;&amp; echo "'$line'"</code></li> </ul> <h3>Original Didactic Pointers</h3> <p>Use</p> <pre><code>dirname a/b/c/file -&gt; a/b/c basename a/b/c/file -&gt; file ls -t / ls -tr sort files by timestamp; note that 'creation date' is likely a fob because hardly any filesystem stores these reliably (it is usually the last change date for the inode) find -type f find -type d find files or directories sort | uniq sort -u sort lines and remove adjacent (subsequent) duplicates </code></pre> <p>Let me know if that helped. I could give you a tiny step-up besides the pointers to the UNIX commands</p>
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    1. POHow to list all sub-directories containing a file
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    1. COYou don't need dirname, basename, ls -t, ls -tr, uniq or sort -u. Uniqueness was no requierement.
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    2. COShow me your solution, then we'll talk :)
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    3. COright now, 2 postings below. but you may upvote it. :)
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