Scripting / one liner help

[Jordon Bedwell]

On Wed, August 10, 2011 2:52 pm, Hal Burgiss wrote:
> Its attempting to capture the string in between:
>
> SRC="  and the next doublequote: ".  The [^"] stops the capture at the
> double quote. The capture should then include any character that is NOT a
> double quote. If not careful, the expression could get "greedy" and start
> matching other double quotes on the same line.  This should stop that
> effect. The \1 is a reference back to the capture that is in the
> parenthesis, in sed syntax, which essentially just preserves the captured
> characters, and ignores the rest. Does that make sense?

Because it should be:

grep -iPo "<img[^>]+>" file.html | \
sed -n 's/<img src=['\''"]\([^"'\'']*\).*/\1/pgI'

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