Dear all I'm a novice in this Linux business, but I think there's something not right. When I try to search using a perl regular expression, so if a do:
gcc --help | grep -P '(?<=the )' I get all lines for which there is any text preceded by "the " -dumpspecs Display all of the built in spec strings -dumpversion Display the version of the compiler -dumpmachine Display the compiler's target processor -print-search-dirs Display the directories in the compiler's search path -print-libgcc-file-name Display the name of the compiler's companion library -print-file-name=<lib> Display the full path to library <lib> -print-prog-name=<prog> Display the full path to compiler component <prog> -print-multi-directory Display the root directory for versions of libgcc -print-multi-lib Display the mapping between command line options and ... If I introduce the -o option so that I have only the part of each line that matches a pattern I have no result gcc --help | grep -P -o '(?<=the )' Is this a bug, or am I doing something wrong. Thanks for any help -- You received this message because you are subscribed to the Linux Users Group. To post a message, send email to [email protected] To unsubscribe, send email to [email protected] For more options, visit our group at http://groups.google.com/group/linuxusersgroup
