正则表达式匹配问题，怎么匹配出来如下？

Question

 PHPSESSID=9sdadee39jn9lvsincc9fo4114; path=\/

如上如何用正则匹配出来”9sdadee39jn9lvsincc9fo4114“。

Answer 1

(System32) 61 % set a {PHPSESSID=9sdadee39jn9lvsincc9fo4114; path=\/}
PHPSESSID=9sdadee39jn9lvsincc9fo4114; path=\/
(System32) 62 % set b {\S+\=(\S+);\s*.*}
\S+\=(\S+);\s*.*
(System32) 63 % regexp -nocase $b $a dummy c
1
(System32) 64 % puts $c
9sdadee39jn9lvsincc9fo4114
(System32) 65 %