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Compiling with g++ using multiple cores
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There is no such flag, and having one runs against the Unix philosophy of having each tool perform just one function and perform it well. Spawning compiler processes is conceptually the job of the build system. What you are probably looking for is the -j (jobs) flag to GNU make, ...
【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
...收到广播包时，协议栈将向上层（也就是应用层，用户可编程）传递广播包。主动扫描，主动扫描除了完成被动扫描的动作外，还会向从机发送一个扫描请求，从机收到该请求时，会再次发送一个称作扫描回应的广播包。
所以...
what's the difference between “hadoop fs” shell commands and “hdfs dfs” shell commands?
...namenodehost).
Most of the commands in FS shell behave like corresponding Unix commands. Differences are described with each of the commands. Error information is
sent to stderr and the output is sent to stdout.
If HDFS is being used,
hdfs dfs
is a synonym.
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RE error: illegal byte sequence on Mac OS X
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I think it's safe to say that the Unix world has embraced UTF-8 at this point: the default LC_CTYPE value is usually <lang_region>.UTF-8, so any file without a BOM (byte-order mark) is therefore interpreted as a UTF-8 file. It is only in the Windows wor...
How do you format an unsigned long long int using printf?
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This isn't a Linux/UNIX thing, the "ll" length modifier was added to Standard C in C99, if it doesn't work in "Microsoft C" then it is because they are not standards compliant.
– Robert Gamble
Oct 17 '08 a...
Python strftime - date without leading 0?
... can remove the leading zero.
For example %Y/%-m/%-d.
This only works on Unix (Linux, OS X), not Windows (including Cygwin). On Windows, you would use #, e.g. %Y/%#m/%#d.
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What are the benefits of learning Vim? [closed]
... it useful? Yes.
Reasons for Learning
vi is guaranteed to exist on all Unix systems and exists on most Linux ones as well. That kind of broad coverage makes learning it worth it.
It's much quicker to use vi for a sudo edit:
$ sudo vi
Also, GMail uses vi-ish commands for selecting & moving...
How do I 'svn add' all unversioned files to SVN?
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This uses UNIX tools (grep, sed, bash) which the OP said he didn't have.
– Naaff
Jul 1 '09 at 23:55
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What is NoSQL, how does it work, and what benefits does it provide? [closed]
...ability reasons, SQL engines tend to disregard the tremendous power of the UNIX operating system and its derivatives.
With a filesystem-based database, you can take immediate advantage of the ever-increasing capabilities and power of the underlying operating system, which have been steadily increas...
CSV in Python adding an extra carriage return, on Windows
...er, that it may produce undesirable newlines (omitting the LF character on Unix operating systems).
In most cases, however, I believe that behavior is preferable and more natural than treating all CSV as a binary format. I provide this answer as an alternative for your consideration.
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