> On Mon, Sep 26, 2011 at 09:37:07PM -0500, Dennis Williamson wrote: >On Mon, Sep 26, 2011 at 8:19 PM, Peng Yu <pengyu...@gmail.com> wrote: >> Hi, >> >> I know that I should use =~ to match regex (bash version 4). >> >> However, the man page is not very clear. I don't find how to match >> (matching any single character). For example, the following regex >> doesn't match xxxxtxt. Does anybody know how to match any character >> (should be '.' in perl) in bash. >> >> [[ "$1" =~ "xxx.txt" ]] >> > >When you quote the string on the right hand side of =~ it changes to a >simple string match instead of a regex match. It is sometimes >difficult to specify a regex literally (and unquoted), so it's best to >use a variable as shown in Steven's reply to you. >
I believe the Bash Manual also strongly suggests, using variables for matching as well. ;-) -- Roger http://rogerx.freeshell.org/
