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How to test an Internet connection with bash?
...on't get, just check page availability
$? : shell return code
0 : shell "All OK" code
Without wget
#!/bin/bash
echo -e "GET http://google.com HTTP/1.0\n\n" | nc google.com 80 > /dev/null 2>&1
if [ $? -eq 0 ]; then
echo "Online"
else
echo "Offline"
fi
...
Daylight saving time and time zone best practices [closed]
...hanged from the original value recorded.
When scheduling future events, usually local time is preferred instead of UTC, as it is common for the offset to change. See answer, and blog post.
When storing whole dates, such as birthdays and anniversaries, do not convert to UTC or any other time zone.
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Use dynamic (variable) string as regex pattern in JavaScript
...g as regex:
Not every string is a valid regex, though: there are some speciall characters, like ( or [. To work around this issue, simply escape the string before turning it into a regex. A utility function for that goes in the sample below:
function escapeRegExp(stringToGoIntoTheRegex) {
return...
Xml Namespace breaking my xpath! [duplicate]
...t element has been defined with a default namespace and this is adopted by all elements inside.
You therefore need to ignore the element namespace like so:
/*[local-name()='List']/*[local-name()='Fields]/*[local-name()='Field]
but this means that the xpath will pick up any other element with Lis...
How do I flush the cin buffer?
...
@Nic - of course, this tells the code to ignore ALL characters until the amount specified. In the main example, it will ignore essentially until EOF (because INT_MAX is huge). As mentioned in the post, if you just want to ignore a single line, you need to specify an extr...
Comments in Markdown
...
I believe that all the previously proposed solutions (apart from those that require specific implementations) result in the comments being included in the output HTML, even if they are not displayed.
If you want a comment that is strictly ...
A regular expression to exclude a word/string
...noreme3)
You can add as much ignored words as you like, here is a simple PHP implementation:
$ignoredWords = array('ignoreme', 'ignoreme2', 'ignoreme...');
preg_match('~^/\b([a-z0-9]+)\b(?<!' . implode('|', array_map('preg_quote', $ignoredWords)) . ')~i', $string);
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90后创业四年:曾经觉得不公 后来愿赌服输 - 资讯 - 清泛网 - 专注C/C++及内核技术
...自己踩过这个坑，回顾我第一次创业时遇到的合伙人内讧问题，背后其实反映的是创始人的心态——创业很轻松，玩一玩就能创业。我甚至会建议一些人别大学一毕业就创业，因为心态不摆正，一定会失败。创业是神圣的行为，...
MySQL with Node.js
...de.js. I come from a PHP background, so I'm fairly used to using MySQL for all my database needs.
9 Answers
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How to access class constants in Twig?
...STANT') }} ? And what do you do when your class names overlaps ? you loose all the benefit of namespaces here
– 0x1gene
Aug 27 '15 at 20:37
1
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