Help me to understand some regular expresions usage

cfajohnson · March 6, 2008, 11:52pm

alex_5161:

Can someone explain me how those
restatements are constructed
   suffix=${name#*.}
   prefix=${main%%+([0-9])}
   num=10#${num}
What is the logic to use a reg-expr in variable name

In first string - the '#' seems to mean 'everithing after next
mached', but the '.' in reg-exp is a one character, here it seems it
used litteraly. Why?

You don't use regular expressions in parameter expansion; you use
filename expansion (a.k.a. wildcard) patterns.

See:
POSIX shell parameter expansions