Dan Track wrote:
Hi Could someone please tell me how I can grep for two or more different words in one command instead of piping them through. e.g I don't want to do cat /tmp/file | grep -v cat | grep -v grey I'd like to run that from one grep command. Many Thanks Dan
Two possibilities: $ cat .Xresources Emacs.default.attributeBackground: white Emacs.default.attributeForeground: black ! XEmacs*EmacsFrame.default.attributeForeground: black XEmacs*EmacsFrame.default.attributeBackground: white ! xterm*geometry: 100x32 xterm*faceName: bitstream vera sans mono xterm*faceSize: 12 xterm*background: white xterm*rightScrollBar: true # Use grep with the -E arg to specify extended # regex usage $ cat .Xresources | grep -Ev "(white|black)" ! ! xterm*geometry: 100x32 xterm*faceName: bitstream vera sans mono xterm*faceSize: 12 xterm*rightScrollBar: true # Or just use egrep $ cat .Xresources | egrep -v "(white|black)" ! ! xterm*geometry: 100x32 xterm*faceName: bitstream vera sans mono xterm*faceSize: 12 xterm*rightScrollBar: true You might want to look at: http://en.wikipedia.org/wiki/Regular_expression http://www.regular-expressions.info/ There is also a great book: http://regex.info/ HTH, Marc Schwartz
