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How to duplicate sys.stdout to a log file?
....6, see below for
# an updated 3.3+-compatible version.
import subprocess, os, sys
# Unbuffer output (this ensures the output is in the correct order)
sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 0)
tee = subprocess.Popen(["tee", "log.txt"], stdin=subprocess.PIPE)
os.dup2(tee.stdin.fileno(), s...
Set environment variables on Mac OS X Lion
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First, one thing to recognize about OS X is that it is built on Unix. This is where the .bash_profile comes in. When you start the Terminal app in OS X you get a bash shell by default. The bash shell comes from Unix and when it loads it runs the .bash_profile s...
What languages are Windows, Mac OS X and Linux written in?
I was just wondering who knows what programming languages Windows, Mac OS X and Linux are made up from and what languages are used for each part of the OS (ie: Kernel, plug-in architecture, GUI components, etc).
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Python Script execute commands in Terminal
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There are several ways to do this:
A simple way is using the os module:
import os
os.system("ls -l")
More complex things can be achieved with the subprocess module:
for example:
import subprocess
test = subprocess.Popen(["ping","-W","2","-c", "1", "192.168.1.70"], stdout=subprocess...
Sublime Text 3能用支持的插件推荐 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...m/SublimeText/TrailingSpaces
注意，在github上下载的插件缺少了一个设置快捷键的文件，可以新建一个名字和后缀为Default (Windows).sublime-keymap的文件，添加以下代码，即可设置“删除多余空格”和“是否开启TrailingSpacer ”的快捷键了。
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What are the differences between virtual memory and physical memory?
...r head around have to do with specific implementations of virtual memory, most likely paging. There is no one way to do paging - there are many implementations and the one your textbook describes is likely not the same as the one that appears in real OSes like Linux/Windows - there are probably subt...
How to detect if app is being built for device or simulator in Swift
...e-C we can know if an app is being built for device or simulator using macros:
20 Answers
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Nginx与Lua - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的优势。
最先将Nginx，Lua组合到一起的是OpenResty，它有一个ngx_lua模块，将Lua嵌入到了Nginx里面；随后Tengine也包含了ngx_lua模块。至于二者的区别：OpenResty是Nginx的Bundle；而Tengine则是Nginx的Fork。值得一提的是，OpenResty和Tengine均是...
How to fix “Attempted relative import in non-package” even with __init__.py
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@MarkAmery Almost lost my mind trying to grok how all this works, relative imports within a project with subdirectories with py files that have __init__.py files yet you keep getting the ValueError: Attempted relative import in non-package...
Get a filtered list of files in a directory
... Oh, I just noticed that the Python docs say glob() "is done by using the os.listdir() and fnmatch.fnmatch() functions in concert, and not by actually invoking a subshell". In other words, glob() doesn't have the efficiency improvements one might expect.
– Ben Hoyt
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