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Site by David Winterbottom (user root).

diff will usually only take one file from STDIN. This is a method to take the result of two streams and compare with diff. The example I use to compare two iTunes libraries but it is generally applicable.

Terminal - diff will usually only take one file from STDIN. This is a method to take the result of two streams and compare with diff. The example I use to compare two iTunes libraries but it is generally applicable.
diff <(cd /path-1; find . -type f -print | egrep -i '\.m4a$|\.mp3$') <(cd /path-2; find . f -print | egrep -i '\.m4a$|\.mp3$')
2009-08-17 00:49:31
User: drewk
Functions: cd diff egrep find
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diff will usually only take one file from STDIN. This is a method to take the result of two streams and compare with diff. The example I use to compare two iTunes libraries but it is generally applicable.

diff is designed to compare two files. You can also compare directories. In this form, bash uses 'process substitution' in place of a file as an input to diff. Each input to diff can be filtered as you choose. I use find and egrep to select the files to compare.

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Terminal - Alternatives

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What others think

vimdiff is also nice, you can navigate between two files being diffed, and the diff updates as you change either file. Here you could just replace 'diff' with 'vimdiff'.

Comment by bwoodacre 144 weeks and 3 days ago

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