Lookup for files with any uppercase letter. Posted by Carlos Villabrille on May 18, 2017 Posted in: Linux, OS Categories. Tagged: file, find, uppercase. Leave a Comment # ls | grep -o '[^ ]*[A-Z][^ ]*' LinkedIn Email Posts navigation ← mdadm recovery of an array ssh export DISPLAY error X Error of failed request: BadDrawable (invalid Pixmap or Window parameter) →