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    <p>The <code>file</code> command can detect what binary types are available in a file.</p> <pre><code>file -b /usr/bin/atrm setuid Mach-O universal binary with 3 architectures /usr/bin/atrm (for architecture x86_64): Mach-O 64-bit executable x86_64 /usr/bin/atrm (for architecture i386): Mach-O executable i386 /usr/bin/atrm (for architecture ppc7400): Mach-O executable ppc </code></pre> <p>So, then, it is just a matter of using find and filtering appropriately. Something like this should find all binaries on the system that have a PPC subsection.</p> <pre><code>find / -perm -u+x ! -type d -exec file {} \; | grep ppc | awk '{print $1}' </code></pre> <p>PPC only is a little more difficult. For that, you'll want to do three commands to create 2 files in /tmp, the first containing a list of PPC files and the second a list of 32 or 64 bit x86 files. Conveniently, 'ppc' matches ppc and ppc64.</p> <pre><code>find / -perm -u+x ! -type d -exec file {} \; | grep ppc | awk '{print $1}' &gt; /tmp/ppc find / -perm -u+x ! -type d -exec file {} \; | grep i386 | awk '{print $1}' &gt; /tmp/x86 find / -perm -u+x ! -type d -exec file {} \; | grep x86_64 | awk '{print $1}' &gt;&gt; /tmp/x86 </code></pre> <p>Then, sort/uniq a bit (just sorts the paths and makes sure each binary is only listed once):</p> <pre><code>cat /tmp/x86 | sort | uniq &gt; /tmp/x86.filtered cat /tmp/ppc | sort | uniq &gt; /tmp/ppc.filtered </code></pre> <p>Then, use diff (and a bit more processing) to spew the list of files that are ppc only:</p> <pre><code>diff /tmp/ppc.filtered /tmp/x86.filtered | grep -e '&lt;' | awk '{print $2}' | perl -p -e 's/:$//' </code></pre> <p>The end result should be a list of files that only contain ppc executable mach-o sections. I would suggest verifying the list before nuking anything.</p> <p>Some notes:</p> <p>All of the above is done in the Terminal.</p> <p>This is just a hack; it worked just fine on my system and I'm glad you asked because I wanted to know the same. But it is just a hack. </p>
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    1. POFind all PPC libraries, binaries and applications in Snow Leopard
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    1. POFind all PPC libraries, binaries and applications in Snow Leopard
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    1. COThe following seems to work in only a single line, without traversing the entire file hierarchy: mdfind -0 'kMDItemContentTypeTree == "public.executable"' | xargs -0 -n 1 sh -c 'lipo="$(lipo -info "$1" 2>/dev/null)"; if [[ "$lipo" == *:*:*ppc* && "$lipo" != *:*:*i386* && "$lipo" != *:*:*x86_64* ]]; then echo "$1"; fi' sh
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    2. COThat surprises me not. All of the above copy/paste into *my* shell. *Your* shell may vary. :) I'm using tcsh, btw.
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