如何从差异中排除所有但特定文件

Question

I'm aware of how to exclude files from diff using the diff -x 'pattern' file1 file2 option. But I intend to exclude ALL files, that don't match "pattern" (kind of an include option). Using an excluding regex didn't do the trick either:

pak@idefix:~$ diff -r -x '^?!.*?\bpattern\b)*$' dir1 dir 2

I already checked the diff man-page but couldnt find something usefull, so some ideas would be great.

Answer 1

You can use find -iname and diff -X as find dir1 dir2 -iname 'pattern' -exec basename {} \\; | diff -r -X - dir1 dir2 find dir1 dir2 -iname 'pattern' -exec basename {} \\; | diff -r -X - dir1 dir2 find dir1 dir2 -iname 'pattern' -exec basename {} \\; | diff -r -X - dir1 dir2 .