When I want to search a snipet, like searchPart1 some unknown text searchPart2 in a text file, I use searchPart1.*searchPart2. But this is not possible in any pdf reader I use.
Currently I convert pdf to a text file and open it using less or geany, then use regular expression available on it.
Is there a Pdf reader with regular expression search other than the commandline pdfgrep
pdfgrepis a grepper so it didn't answer the question completely. A pdf reader with inbuilt pdfgrep is required to accept the answer – totti Feb 28 '13 at 06:32