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How can I programmatically create a new cron job?
...
The best way if you're running as root, is to drop a file into /etc/cron.d
if you use a package manager to package your software, you can simply lay down files in that directory and they are interpreted as if they were crontabs, but with an extra field for t...
XPath OR operator for different nodes
...XML tree. "//book|//cd" means among all child nodes and descendant of the root node find all ones named 'book' then find also all named 'cd'. If in the descendance of the root node there are only book nodes,your node-set will contain book nodes only. If in the descendance of the root node there a...
30条爆笑的程序员梗 PHP是最好的语言 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...公路下山时坏在半路上了。于是两位工程师和一位经理就如何修车的问题 展开了讨论。
硬件工程师说：“我可以用随身携带的瑞士军刀把车坏的部分拆下来，找出原因，排除故障。”
项目经理说：“根据经营管理学，应该召...
Heroku push rejected, no Cedar-supported app detected
...to this error message, but my problem was that my rails app was not in the root directory of my git repo. After I moved the files into the root dir, everything worked.
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What does this mean: Failure [INSTALL_FAILED_CONTAINER_ERROR]?
...c/smdl2tmp1.asec
Edit/Update by Mathias Conradt (OP):
If you don't have root access, you need to mount the sdcard and remove it via pc:
/.android_secure/smdl2tmp1.asec
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Sass .scss: Nesting and multiple classes?
...ay want to go more classes up than one. In this case you could try the @at-root and #{} css features which would enable two root classes to sit next to each other using &.
This wouldn't work (due to the nothing before & rule):
container {
background:red;
color:white;
...
How to build an android library with Android Studio and gradle?
...you how ) that is very similar to Maven if you have ever used it.
Project Root
+-- src
| +-- main (your project)
| | +-- java (where your java code goes)
| | +-- res (where your res go)
| | +-- assets (where your assets go)
| | \-- AndroidManifest.xml
| \-- instrumentTest (test...
为何谷歌不可复制？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...却市值突破千亿美金的大公司的本来面目。
这一切又是如何发生的呢？
后德鲁克时代的“传统”公司
《重新定义公司》这本书就试图解开上述谜团，本书的作者们包括埃里克·施密特(谷歌执行董事长)、乔纳森·罗森伯格(谷...
Setting environment variables via launchd.conf no longer works in OS X Yosemite/El Capitan/macOS Sie
...vironment variables definition:
$ ls -la /etc/environment
-r-xr-xr-x 1 root wheel 369 Oct 21 04:42 /etc/environment
$ cat /etc/environment
#!/bin/sh
set -e
syslog -s -l warn "Set environment variables with /etc/environment $(whoami) - start"
launchctl setenv JAVA_HOME /usr/local/jdk1.7...
How can “while (i == i) ;” be a non-infinite loop in a single threaded application?
...magic value within a calculation. Because a calculation failed - eg square root of a negative, divide by zero etc - it makes no sense in comparing them against anything else. After all if divide by zero is a nan is it equivalent to the square root of -2 or square root of -3 ?
Nan allows a calculati...