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Running shell command and capturing the output
...
This is way easier, but only works on Unix (including Cygwin) and Python2.7.
import commands
print commands.getstatusoutput('wc -l file')
It returns a tuple with the (return_value, output).
For a solution that works in both Python2 and Python3, use the subpro...
Lua简明教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...= "local variable"
控制语句
不多说了，直接看代码吧（注意：Lua没有++或是+=这样的操作）
while循环
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sum = 0
num = 1
while num <= 100 do
sum = sum + num
num = num + 1
end
print("sum...
dd: How to calculate optimal blocksize? [closed]
...d its version), and the various hardware buses and disks involved. Several Unix-like systems (including Linux and at least some flavors of BSD) define the st_blksize member in the struct stat that gives what the kernel thinks is the optimal block size:
#include <sys/stat.h>
#include <stdio...
“Incorrect string value” when trying to insert UTF-8 into MySQL via JDBC?
...ntu0.16.04.1 (Ubuntu)
Protocol version: 10
Connection: Localhost via UNIX socket
Server characterset: utf8
Db characterset: utf8
Client characterset: utf8
Conn. characterset: utf8
UNIX socket: /var/run/mysqld/mysqld.sock
Uptime: 42 min 49 sec
Threads: 1 Questi...
How to load/edit/run/save text files (.py) into an IPython notebook cell?
...n notebook (now Jupyter notebook) is so cool that it allows you to use any unix command right from the cell (this is also equivalent to using the %%bash cell magic command).
To run a unix command from the cell, just precede your command with ! mark. for example:
!python --version see your python ...
The Definitive C Book Guide and List
...rogramming by Example - John W. Perry (1998).
Advanced Programming in the UNIX Environment - Richard W. Stevens and Stephen A. Rago (2013). Comprehensive description of how to use the Unix APIs from C code, but not so much about the mechanics of C coding.
Uncategorized
Essential C (Free PDF...
【BLE技术内幕】BLE技术揭秘 - 创客硬件开发 - 清泛IT论坛，有思想、有深度
...函数的调用。我们分别从蓝牙从机和蓝牙主机两种设备来分析。蓝牙从机
相关硬件和基础服务初始化设置广播参数：广播数据，广播间隔，扫描回应等参数或者数据。设置Profile：添加从机服务、特征是，还有设置回调函数用于...
How can I use a Python script in the command line without cd-ing to its directory? Is it the PYTHONP
... one or more directory
pathnames separated by os.pathsep (e.g. colons on Unix or semicolons
on Windows). Non-existent directories are silently ignored.
In addition to normal directories, individual PYTHONPATH entries may
refer to zipfiles containing pure Python modules (in either source o...
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 script. You can modify this s...
Make git automatically remove trailing whitespace before committing
...ommit to use the wrong editor? I wrap the VISUAL= part in a subshell in my unix version above to avoid this, but I don't know if DOS has subshells.
– ntc2
Jul 26 '13 at 18:20
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