我正试图从一页的炮弹中提取文字,作为说明我当地气温的文字的一部分。
然而,我可以把如何妥善使用灰 to带上头。
摘录
</div><div id="yw-forecast" class="night" style="height:auto"><em>Current conditions as of 8:18 PM GMT</em><div id="yw-cond">Light Rain Shower</div><dl><dt>Feels Like:</dt><dd>6 °C</dd><dt>Barometer:</dt><dd style="position:relative;">1,015.92 mb and steady</dd><dt>Humidity:</dt><dd>87 %</dd><dt>Visibility:</dt><dd>9.99 km</dd><dt>Dewpoint
减幅
<dt>Feels Like:</dt><dd>6 °C</dd>
ying6°C
我尝试了各种不同的策略,包括 gr和 a。 伤者能否帮助我解救?
提 出
grep -o -e "<dd>.*deg;C</dd>" the_html.txt
单页:
-e PATTERN, --regexp=PATTERN
Use PATTERN as the pattern. This can be used to specify
multiple search patterns, or to protect a pattern beginning with
a hyphen (-). (-e is specified by POSIX.)
...
-o, --only-matching
Print only the matched (non-empty) parts of a matching line,
with each such part on a separate output line.
如果您希望删除<条码>、d>和</d>。 另见-b 5-12。
引证:
grep -Po (?<=Feels Like:</dt><dd>).*?(?=</dd>) | sed s/ °/°/
结果:
6°C
如果X是你的输入档案,而超文本来源则按你的书写方式定期编排,这应当做到:
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