grep by曹斯琴，2007.7.17

代码说明：

grep by Cao Siqin,2007.7.17 grep [-v?] Options: -? : show this help -v : list lines that doesn t contain sub-string -n : list in one line, words separated by tab-grep by Cao Siqin,2007.7.17 grep [-v?] Options: -? : show this help -v : list lines that doesn t contain sub-string -n : list in one line, words separated by tab