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Convert command line arguments into an array in Bash
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216
Actually your command line arguments are practically like an array already. At least, you can t...
How to use > in an xargs command?
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201
Do not make the mistake of doing this:
sh -c "grep ABC {} > {}.out"
This will break under ...
How can I convert an RGB image into grayscale in Python?
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12 Answers
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Why is the shovel operator (
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Proof:
a = 'foo'
a.object_id #=> 2154889340
a << 'bar'
a.object_id #=> 2154889340
a += 'quux'
a.object_id #=> 2154742560
So << alters the original string rather than creating a new one. The reason for this is that in ruby a += b is syntact...
MFC 中CImageList的用法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...，为他们提供图标资源。
一、图像控件的对象结构
1 图像控件的数据成员
m_hImageList连接图像对象的控件句柄
2 图像控件的建立方法
CImageList& ImageList建立图像控件对象结构，Create初始化图像列表并绑定对象，图像...
Chmod recursively
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131
You need read access, in addition to execute access, to list a directory. If you only have exe...
A top-like utility for monitoring CUDA activity on a GPU
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15 Answers
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通过FastCGI Cache实现服务降级 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...并且完成服务降级：
limit_conn_zone $server_name zone=perserver:1m;
error_page 500 502 503 504 = @failover;
fastcgi_cache_path
/tmp
levels=1:2
keys_zone=failover:100m
inactive=10d
max_size=10g;
upstream php {
server 127.0.0.1:9000;
server 127.0....
“x not in y” or “not x in y”
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112
They always give the same result.
In fact, not 'ham' in 'spam and eggs' appears to be special...
How to get hex color value rather than RGB value?
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19 Answers
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