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How do I list all cron jobs for all users?
Is there a command or an existing script that will let me view all of a *NIX system's scheduled cron jobs at once? I'd like it to include all of the user crontabs, as well as /etc/crontab , and whatever's in /etc/cron.d . It would also be nice to see the specific commands run by run-parts in /e...
How to print struct variables in console?
... @fnr If you have a JSON document, you would need to unmarshall it, before being able to print its field.
– VonC
Jul 1 '14 at 14:16
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How to set Python's default version to 3.x on OS X?
...n use command python, which will leaving the alias untouched, and works in all shells.
If you launch interpreters more often (I do), you can always create more aliases to add as well, i.e.:
alias 2='python2'
alias 3='python3'
Tip: For scripts, instead of using a shebang like:
#!/usr/bin/env p...
Detect URLs in text with JavaScript
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Finally a regex that really works in most obvious case! This one deserves a bookmarking. I tested thousands examples from googles search until i find this.
– Ismael
Jan 16 '15 at 15:11
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What is the (function() { } )() construct in JavaScript?
...tion expression. Then look at the last pair (function(){})();, this is normally added to an expression to call a function; in this case, our prior expression.
This pattern is often used when trying to avoid polluting the global namespace, because all the variables used inside the IIFE (like in any ...
When should you use constexpr capability in C++11?
... "function that always returns 5" is breaking or diluting the meaning of "calling a function". There must be a reason, or a need for this capability or it wouldn't be in C++11. Why is it there?
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How to create fixed space and flexible space bar button items programmatically?
I want to create UIBarButtonItems programmatically and place these fixed space items between buttons.
7 Answers
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“f” after number
What does the f after the numbers indicate? Is this from C or Objective-C? Is there any difference in not adding this to a constant number?
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淘宝新美大滴滴霸占衣食行 为何唯独“住”缺独角兽 - 资讯 - 清泛网 - 专注...
...滴滴霸占衣食行 为何唯独“住”缺独角兽想要成为中国版的Airbnb、Homeway，或许你可以参考这四种玩法。曾经有人在网上提出疑问，认为衣食行三大领域，有淘宝、美团大众、滴滴携程等互联网巨头公司，为何偏偏“住”这一个...
一体化的Linux系统性能和使用活动监控工具–Sysstat - 更多技术 - 清泛网 -...
...系统的 I/O状态数据。
2014年6月17日， SYSSTAT11.0.0（稳定版）正式发布。它带来了一些新的有趣的功能，如下所示。
pidstat命令得到了新的增强，新增了一些命令选项：
一个是“-R”，它可以提供有关策略和任务调度优先级。其...