Why is that, anyway? Isn't grep by definition "get regular expression and print"? Why do you have to use egrep to use REs?
William > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > On Behalf Of Michael Torrie > Sent: Wednesday, November 19, 2003 8:04 AM > To: [EMAIL PROTECTED]; BYU Unix Users Group > Subject: Re: [uug] Help with Regular expressions and backing up files > > On Wed, 2003-11-19 at 00:11, Richard Esplin wrote: > > grep -v will do an invert match, only returning the files that don't > contain > > the specified strings. You could then send that list to cp to make your > > backups (make sure to use the -p flag to preserve permissions). > > But unison is a tool that will do exactly what you want. If you put > your list > > of files in the ignore list in your preferences file, then unison will > never > > touch them. unison has a lot of other features too, so perhaps it is > overkill > > for your purposes. > > Good idea. Furthermore, though, you should probably be using egrep, not > grep, since it does regular expressions. > > Michael ____________________ BYU Unix Users Group http://uug.byu.edu/ ___________________________________________________________________ List Info: http://uug.byu.edu/cgi-bin/mailman/listinfo/uug-list
