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How to get current time in milliseconds in PHP?
...time(true) on the other hand returns the current time in seconds since the Unix epoch accurate to the nearest microsecond (see PHP reference). It's actually very easy to test if you run the above code in a loop and display the milliseconds.
– laurent
Dec 18 '12...
How to set environment variable for everyone under my linux system?
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Amazingly, Unix and Linux do not actually have a place to set global environment variables. The best you can do is arrange for any specific shell to have a site-specific initialization.
If you put it in /etc/profile, that will take car...
技术和资本玩转创客圈 英特尔在中国的动作才刚刚开始 - 资讯 - 清泛网 - 专...
...意研发需求后，硬享公社随即对合作伙伴的资源进行实时分析与匹配，然后“牵线搭桥”。
在英特尔副总裁兼渠道销售事业部总经理Rick Dwyer的演示过程中，硬享公社成功帮一名国外的创客找到了一家与其志同道合的中国的生态...
How to split a file into equal parts, without breaking individual lines? [duplicate]
...xcept for the last), without breaking the line? Using the split command in Unix, lines may be broken in half. Is there a way to, say, split up a file in 5 equal parts, but have it still only consist of whole lines (it's no problem if one of the files is a little larger or smaller)? I know I could ju...
Location of my.cnf file on macOS
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In general, on Unix and Unix-like systems, MySQL/MariaDB programs read config/startup files in the following locations (in the specified order):
/etc/my.cnf - Global
/etc/mysql/my.cnf - Global
SYSCONFDIR/my.cnf - Global
SYSCONFDIR r...
Pinging servers in Python
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This function works in any OS (Unix, Linux, macOS, and Windows)
Python 2 and Python 3
EDITS:
By @radato os.system was replaced by subprocess.call. This avoids shell injection vulnerability in cases where your hostname string might not be validated.
impor...
无人驾驶汽车大难题 人工智能同人的差距显著 - 资讯 - 清泛网 - 专注C/C++...
...下的Here地图。
科技本身发展迅速——凯利蓝皮书的高级分析师卡尔·布劳尔(KarlBrauer)预计3~7年后技术将达到成熟。不少车企也将2020年作为实现自动驾驶的时间节点。不过，法律可能是其绕不开的一大问题。
据了解，在美国只...
Pulse Secure解决方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...要完整的解决方案来满足企业规章制度。此外，据著名的分析公司称，许多企业从未想过部署公司级的接入控制解决方案！最佳的解决方案应支持多种实施方法，并能够将现有基础设施作为组件给予最充分的利用。
您需要考虑...
How to detect the OS from a Bash script?
...ve a sh script of about 100 lines that works across a very wide variety of Unix platforms: any system I have used since 1988.
The key elements are
uname -p is processor type but is usually unknown on modern Unix platforms.
uname -m will give the "machine hardware name" on some Unix systems.
/bin/...
OS detecting makefile
...e
The make command is the same on both platforms. The given output is on Unix-like OSes:
> make -C lib
make: Entering directory '/tmp/lib'
gcc -c hello.c -fPIC -o hello.o
# -c hello.c => hello.c is first file after ':' => Compile hello.c
# -fPIC => Position-Independent Code ...