August 2007 Archives

mmx: thank u very much ! <a href="http://blog.jianingy.com/2008/04/nfsuninterruptible.html#comment-15" title="full comment on: 杀掉由NFS造成Uninterruptible的进程">read more
FW: pls contact me with email.about APIHook. <a href="http://blog.jianingy.com/2008/05/rxvtunicode-urxvt-patch.html#comment-14" title="full comment on: 【转】rxvt-unicode (urxvt) 字间距过宽的patch">read more
cnhackTNT: 晕,被过滤掉了,再试试: s/(?&lt;!\\)\$NICK/lc/e; 汗,过滤了小于符号,只好写&lt;了呵呵 <a href="http://blog.jianingy.com/2007/08/lookahead.html#comment-12" title="full comment on: 用正则表达式Look-Ahead做带逃逸的变量替换">read more
cnhackTNT: s/(? 这样可以少打几个字呵呵 <a href="http://blog.jianingy.com/2007/08/lookahead.html#comment-11" title="full comment on: 用正则表达式Look-Ahead做带逃逸的变量替换">read more
R.Q.: 酱紫哦，了了 -------- <a href="http://blog.jianingy.com/2007/07/ssh-1.html#comment-8" title="full comment on: 个性化SSH登录">read more

用正则表达式Look-Ahead做带逃逸的变量替换

By jianingy on August 24, 2007 8:59 AM | 2 Comments | No TrackBacks

s/\$NICK(?<!\\\$NICK)/$nick/g;

将文本中$NICK替换为变量$nick, 当且仅当$前不是\. "hello, $NICK"可以被替换, 而"using \$NICK" 在中的$NICK则不会被替换掉.

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