#!/bin/bash
xml='<url><loc>http://w...content-available-to-author-only...e.com/</loc><changefreq>daily</changefreq></url>
<url><loc>http://w...content-available-to-author-only...e.com/en/rWGpqHtU/</loc><changefreq>daily</changefreq></url>
<url><loc>http://w...content-available-to-author-only...e.com/de/hVHaViPm/</loc><changefreq>daily</changefreq></url>
<url><loc>http://w...content-available-to-author-only...e.com/uk/ysbqqLRj/</loc><changefreq>daily</changefreq></url>
<url><loc>http://w...content-available-to-author-only...e.com/jp/EUvnikfR/</loc><changefreq>daily</changefreq></url>
<url><loc>http://w...content-available-to-author-only...e.com/hk/UqGauZTv/</loc><changefreq>daily</changefreq></url>'
grep -Eo "https?://www\.example\.com/[uh]k/[^<]*" <<< "$xml"
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