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一文了解大数据领域创业的机会与方向 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...场和客户的大数据分析工具和服务。另外，将大数据工具完整化和产品化也是一个方向。新一代的大数据处理工具应该是有着漂亮UI，功能按键和数据可视化等模块的完整产品，而不是一堆代码。
再说2C方向。
大数据一个很大...
【phpcms v9】PC站和手机站 全静态手机移动站方法 - 更多技术 - 清泛网 - ...
...后台建立PC、手机两个站点实现，本篇暂时不提供... （不推荐，phpcms多网站本身有一些bug）---
3、------- 以下是PC、手机全静态，基于独立部署PC手机两套网站维护两份后台实现的 --------
--------想要体验好的话改动地方较多， ...
How do I copy a file in Python?
...dest_file, *, follow_symlinks=True)
# example
shutil.copyfile('source.txt', 'destination.txt')
shutil.copy signature
shutil.copy(src_file, dest_file, *, follow_symlinks=True)
# example
shutil.copy('source.txt', 'destination.txt')
shutil.copy2 signature
shutil.copy2(src_file, dest_file, *...
Remove all files except some from a directory
...
find [path] -type f -not -name 'textfile.txt' -not -name 'backup.tar.gz' -delete
If you don't specify -type f find will also list directories, which you may not want.
Or a more general solution using the very useful combination find | xargs:
find [path] -type ...
Bash: Strip trailing linebreak from output
When I execute commands in Bash (or to be specific, wc -l < log.txt ), the output contains a linebreak after it. How do I get rid of it?
...
What's the difference between getPath(), getAbsolutePath(), and getCanonicalPath() in Java?
...
Consider these filenames:
C:\temp\file.txt - This is a path, an absolute path, and a canonical path.
.\file.txt - This is a path. It's neither an absolute path nor a canonical path.
C:\temp\myapp\bin\..\\..\file.txt - This is a path and an absolute path. It's no...
How to check the extension of a filename in a bash script?
...
I think you want to say "Are the last four characters of $file equal to .txt?" If so, you can use the following:
if [ ${file: -4} == ".txt" ]
Note that the space between file: and -4 is required, as the ':-' modifier means something different.
...
Read each line of txt file to new array element
...$filename is going to be the path & name of your file, eg. ../filename.txt.
Depending how you've set up your text file, you'll have might have to play around with the \n bit.
share
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improve th...
搭建高可用mongodb集群（一）——配置mongodb - 大数据 & AI - 清泛网 - 专...
.../single/data
#进入mongodb文件夹
cd /data/mongodbtest/single
2、下载mongodb的安装程序包
wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.4.6.tgz
#解压下载的压缩包
tar xvzf mongodb-linux-x86_64-2.4.6.tgz
#进入mongodb程序执行文件夹
cd mongodb...
How to install packages offline?
...u download packages without installing them:
pip download -r requirements.txt
(In previous versions of pip, this was spelled pip install --download -r requirements.txt.)
Then you can use pip install --no-index --find-links /path/to/download/dir/ -r requirements.txt to install those downloaded s...