使用此文:
sessionInfo()
R version 3.4.3 (2017-11-30)
Platform: x86_64-apple-darwin15.6.0 (64-bit)
Running under: macOS Sierra 10.12.6
Matrix products: default
BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/3.4/Resources/lib/libRlapack.dylib
locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] parallel stats graphics grDevices utils datasets methods base
loaded via a namespace (and not attached):
[1] compiler_3.4.3 tools_3.4.3
我需要一个条件语句,基本上说:
如果链接中显示文字'font color =“red”',请匹配'html“>'。
我一直在尝试以下代码:
<li><a href="html/Inpatient/3,40060.html"> Informaci<font color="red">ó</font>n para los maestros y la escuela</a></li>
但选择最终被分解成碎片,并且没有进行比赛。有什么想法吗?
{{3}}
答案 0 :(得分:1)
The proper way using xpath :
//a[font[@color="red"]]
or in a shell :
xmllint --html --xpath '//a[font[@color="red"]]' file |
grep -o 'html">'
html">