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Explore Stack Internal This works. ^ denotes start of line, plus the {32} you already had, then a $ for end of line.
$ cat fileA fileB 12345678901234567890123456789012 123456789012345678901234567890123 12345678901234567890123456789012 123456789012345678901234567890124 $ grep -E "^.{32}$" fileA fileB fileA:12345678901234567890123456789012 fileB:12345678901234567890123456789012 $ And as pointed out by @steeldriver, posix grep includes -x, so the following approach also works : grep -xE ".{32}" fileA fileB
This works. ^ denotes start of line, plus the {32} you already had, then a $ for end of line.
$ cat fileA fileB 12345678901234567890123456789012 123456789012345678901234567890123 12345678901234567890123456789012 123456789012345678901234567890124 $ grep -E "^.{32}$" fileA fileB fileA:12345678901234567890123456789012 fileB:12345678901234567890123456789012 $ This works. ^ denotes start of line, plus the {32} you already had, then a $ for end of line.
$ cat fileA fileB 12345678901234567890123456789012 123456789012345678901234567890123 12345678901234567890123456789012 123456789012345678901234567890124 $ grep -E "^.{32}$" fileA fileB fileA:12345678901234567890123456789012 fileB:12345678901234567890123456789012 $ And as pointed out by @steeldriver, posix grep includes -x, so the following approach also works : grep -xE ".{32}" fileA fileB
This works. ^ denotes start of line, plus the {32} you already had, then a $ for end of line.
$ cat fileA fileB 12345678901234567890123456789012 123456789012345678901234567890123 12345678901234567890123456789012 123456789012345678901234567890124 $ grep -E "^.{32}$" fileA fileB fileA:12345678901234567890123456789012 fileB:12345678901234567890123456789012 $