????????????????? Linux???????????Щ???????????Щ???????????￡?
????xargs or parallel: ?????????Щ?????????к??????
????sed and awk: ??????????????????????????????????Python??Ruby????
????m4: ???????????
????screen: ?????????????ú????ù???????http://www.ibm.com/developerworks/cn/linux/l-cn-screen/
????yes: ??????????? ??? http://codingstandards.iteye.com/blog/826940
????cal: ????????????
????env: ????????????????з??????
????look: ????????????????????
????cut and paste and join:   ???????????
????fmt: ?????????????
????pr: ???/?????λ??????????????????????????? http://hi.baidu.com/mchina_tang/item/1ce11d5d317dfc05aaf6d70d
????fold: ????????
????column: ???????????л???
????expand and unexpand: ????????????????
????nl: ????к?
????seq: ????к?
????bc: ??????
????factor: ???????????????factor??????????????????
????nc: ???????????????
????dd: ????????豸?????????
????file: ?ж?????????????
????stat: ???????
????tac: ???????????????????cat?????????
????shuf: ??????????????????????
????comm: ???б????????????
????hd and bvi: ???????????????
????strings: ????????????е?????
????tr: ??????????????
????iconv or uconv: ?????????????
????split and csplit: ???????
????7z: ?????????????
????ldd: ??????????
????nm: ?????????е?????
????ab: ???????????????????
????strace: ??????????
????mtr: ???????????????????·????????
????cssh: ????????shell
????wireshark and tshark: ?????????????????