"" '' Not sure Echo "\\\\" result \ Echo '\\\\' results \\ Why is this time, I have yet to find out "and" and '' The difference between how ',' Italy will be transferred to explain characters \ "," not "" '' Not sure Which shell? there 's no problem for me with bash while Echo '\\\\'? Fang@bash ~ $ Uname - CYGWIN_NT-5.1 bash 1.5.18 (0.132/4/2) 2005-07-02 20:30 i686 unknown unknown Cygwin Fang@bash ~ $ Echo $BASH_VERSION 3.00.16 (11) -release Fang@bash ~ $ Echo '\\\\' \\\\ Fang@bash ~ $ Echo "\\\\" \\ Fang@bash ~ $ "" '' Not sure Mono Q quotation marks to explain see 13 "" '' Not sure I aix Guangzhou Trade Fair is the ksh shell is what you yourselves "" '' Not sure Bash, but it does not matter pdksh ah? [victor@localhost ~]$ Ksh $ Echo $ 0 Ksh $ Echo '\\\\' \\\\ $ Not a bargain "" '' Not sure I turbolinux and hpunix aix and also the results of tests under the ksh and landlord, I would like to be "the" and 'and' have not lost sight of the "\" meta-characters, "" '' different ways of scanning bar. '' No concern for the outcome of the first scan. I prate of. We analyze heroes. [ Closed window ]