I have http log that I want to get words after specific "tag", this a sample line from the log:
98,POST,200 OK,www.facebook.com,Mozilla/5.0 (Windows NT 6.1; WOW64; rv:9.0.1) Gecko/20100101 Firefox/9.0.1,/ajax/updatestatus.php?__a=1,datr=P_H1TgjTczCHxiGwdIF5tvpC; lu=Si1fMkcrU2SInpY8tk_7tAnw; c_user=728445064; xs=61%3Ab9ee26a8f2fc53efb960a6bd6c1c0042%3A0%3A1328685197; presence=EDvFA22A2EtimeF1328685268EuserFA2728445064A2EstateFDutF1328685268207EvisF1EvctF0H0EblcF0EsndF1ODiFA21014445485A2C_5dEfFA21014445485A2EuctF1328685227EsF0CEchFDp_5f728445064F15CC; p=3; act=1328685304452%2F17%3A2; _e_0Hb1_9=%5B%220Hb1%22%2C1328685304455%2C%22act%22%2C1328685304452%2C17%2C%22http%3A%2F%2Fwww.facebook.com%2Fajax%2Fupdatestatus.php%22%2C%22f%22%2C%22submit%22%2C%22wall%22%2C%22r%22%2C%22%2Fmeemelati%22%2C%7B%22ft%22%3A%7B%7D%2C%22gt%22%3A%7B%22profile_owner%22%3A%22731612557%22%2C%22ref%22%3A%22mf%22%7D%7D%2C0%2C0%2C0%2C0%2C16%5D; x-src=%2Fajax%2Fupdatestatus.php%7Cprofile_stream_composer,548,application/x-www-form-urlencoded; charset=UTF-8,0,application/x-javascript; charset=utf-8,gzip,chunked,post_form_id=a012a7a073bc1d990a6c449643ea4570&fb_dtsg=AQDnwj7O&xhpc_composerid=ux0ih_13&xhpc_targetid=731612557&xhpc_context=profile&xhpc_fbx=1&xhpc_timeline=&xhpc_ismeta=1&xhpc_message_text=Hello%20Londoners&xhpc_message=Hello%20Londoners&composertags_place=102173726491792&composertags_place_name=&composer_predicted_city=102173726491792&composer_session_id=1328685296&is_explicit_place=&composertags_city=102173726491792&disable_location_sharing=false&nctr[_mod]=pagelet_wall&lsd&post_form_id_source=AsyncRequest&__user=728445064&phstamp=16581681101191065579516,<EOH>
After awk found specific tag: "xhpc_message_text="
It will give output: "Hello Londoners" (it will remove url character encoding too, like "%20" in this sample output string)
And limit by char "&" or "&xhpc_message".
thanks, for any suggestion to solve this problem.