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Rollback to an old Git commit in a public repo
...nges to the whole tree. You should execute this command in the git project root. If you are in any sub directory, then this command only changes the files in the current directory. Then commit and you should be good.
You can undo this by
git reset --hard
that will delete all modifications from ...
What's the difference between the data structure Tree and Graph?
...recursive pointer-based structure. The representation is not unique for unrooted trees, but that is immaterial.
– j_random_hacker
Jul 7 '14 at 9:42
2
...
总结const_cast、static_cast、dynamic_cast、reinterpret_cast - C/C++ - ...
...int类型在内存中所占字节数）。为了知道static_cast<> 实际如何，我们不得不要来看一下CDerived的内存布局。
CDerived的内存布局（Memory Layout）
如图所示，CDerived的内存布局包括两个对象，CBaseX 和 CBaseY，编译器也知道这一点...
Is there an S3 policy for limiting access to only see/access one bucket?
...ckets permission is that the recipient of this policy can see all of your (root's) buckets. There is no data disclosure directly, but there might be sensitivity/confusion around bucket names. It is feasible to remove this particular permission and things should still work (although "s3cmd ls" etc wi...
How to use redis PUBLISH/SUBSCRIBE with nodejs to notify clients when data values change?
...but not least the sample code from media fire.
Install node.js+npm(as non root)
First you should(if you have not done this yet) install node.js+npm in 30 seconds (the right way because you should NOT run npm as root):
echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bashrc
. ~/.bashrc
mkdir ~...
How can I get the current network interface throughput statistics on Linux/UNIX? [closed]
...
This assumes root access is available
– Lionel
Nov 7 '11 at 4:18
20
...
Excluding directories in os.walk
...ited by os.walk:
# exclude = set(['New folder', 'Windows', 'Desktop'])
for root, dirs, files in os.walk(top, topdown=True):
dirs[:] = [d for d in dirs if d not in exclude]
From help(os.walk):
When topdown is true, the caller can modify the dirnames list in-place
(e.g., via del or slice assign...
Where can I get a list of Ansible pre-defined variables?
...
"root": "/dev/mapper/precise32-root"
}, ...
推荐系统算法初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...显然匹配前两个词都不如直接匹配英超来得准确，系统该如何体现出关键词的这种“重要性”呢？这时我们便可以引入词权的概念。在大量的语料库中通过计算（比如典型的TF-IDF算法），我们可以算出新闻中每一个关键词的权重...
Creating a daemon in Linux
...e permissions */
umask(0);
/* Change the working directory to the root directory */
/* or another appropriated directory */
chdir("/");
/* Close all open file descriptors */
int x;
for (x = sysconf(_SC_OPEN_MAX); x>=0; x--)
{
close (x);
}
/* Open...