I have a file (file1) that looks like this:
ROW 1 AA 120 APFGHKDESFNNJFHGRIHJASFGNSKDHFIXXXXXX
ROW 2 AA 234 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
ROW 3 AA 122 XXXXXXXXXXXXXXXXXXXXX
ROW 4 AA 89 WUAHGLIHGUNGBGDSYUXXXXXXXXXXXXXXFGOAYGIGWEIWIGFUEGFHUIWGEFU
ROW 5 AA 186 XXWANFJHOUNGRIGNO
ROW 6 AA 156 WANLHRIOGRNINGIJOHONJPHHYGKHDY
...
there are multiple rows that contain different numbers of X. however, the result should not contains the rows which only consist of X, it should be:
ROW 1 AA 120 APFGHKDESFNNJFHGRIHJASFGNSKDHFIXXXXXX
ROW 4 AA 89 WUAHGLIHGUNGBGDSYUXXXXXXXXXXXXXXFGOAYGIGWEIWIGFUEGFHUIWGEFU
ROW 5 AA 186 XXWANFJHOUNGRIGNO
ROW 6 AA 156 WANLHRIOGRNINGIJOHONJPHHYGKHDY
...
Thank you for the help!