john smith scripsit: >Hi! > mind twister break? >how to use grep to show all the paladrome words in the linux dictionary? > >grep '\(.\)\(.\)\(.\)\3\2\1' \usr\dict\words partly works?
You simply can't. period. palindrome (not palandrome) is a context-free concept, that is to say you can't express it with regular expression. See any good book on compilers or better still forma languages to understand why. -- Leo "TheHobbit" Cacciari I am the "ILOVEGNU" signature virus. Just copy me to your signature. This email was infected under the terms of the GNU General Public License.
