我将使用Perl，因为我知道的语法，而无需看它，但它会在AWK非常相似或sed的，因为tekknolagi说：

I'll use Perl, because I know the syntax without having to look it up, but it would be very similar in awk or sed, as tekknolagi says:

perl -pi -e 's|http://site.com/.*([^/]+)"/>|web/$1"/>|;'  <filename>

这将美元最后夹住的p $ pserve一切/和

This will preserve everything between the last / and the "