tcpick is a textmode sniffer libpcap-based that can track, reassemble and reorder tcp streams. Tcpick is able to save the captured flows in different files or displays them in the terminal, and so it is useful to sniff files that are transmitted via

很强大的awk和sed教程，志同道合的朋友们，加油喔-Very powerful awk and sed tutorial, like-minded friends, come on!

It contains introduction to unix.File attributes, the basic directory permission, the process, customizing the environment, gre and sed command, awk filters