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^M at the end of every line in vim

...sy way to strip out the DOS line endings is to use the ff option: :set ff=unix :wq Now your file is back to the good-old-Unix-way. If you want to add the DOS line-endings (to keep a printer happy, or transfer files with Windows friends who don't have nice tools) you can go the opposite direction...
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Add up a column of numbers at the Unix shell

... ... | paste -sd+ - | bc is the shortest one I've found (from the UNIX Command Line blog). Edit: added the - argument for portability, thanks @Dogbert and @Owen. share | improve this answe...
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How to convert the ^M linebreak to 'normal' linebreak in a file opened in vim?

... :e ++ff=dos followed by :set ff=unix will convert the endings to a sane format. – Mateen Ulhaq Mar 2 '18 at 2:22 ...
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Why number 9 in kill -9 command in unix? [closed]

... See the wikipedia article on Unix signals for the list of other signals. SIGKILL just happened to get the number 9. You can as well use the mnemonics, as the numbers: kill -SIGKILL pid ...
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App Inventor 2 SQLite 拓展:超流行兼容主流SQL语法的迷你本地数据库引擎...

... 在编写此扩展之前,我从未进行过任何 Android 编程。我突然需要一款小型应用,这将是一次完美的学习体验。从小处着手,我遇到了 App Inventor 以及该平台的所有变体。经过一番研究,我得出结论,这将是一个不错的...
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psql: FATAL: Peer authentication failed for user “dev”

...atabase user name -h is the hostname/IP of the local server, thus avoiding Unix domain sockets -d is the database name to connect to This is then evaluated as a "network" connection by Postgresql rather than a Unix domain socket connection, thus not evaluated as a "local" connect as you might see ...
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6个变态的C语言Hello World程序 - 创意 - 清泛网 - 专注C/C++及内核技术

...GCC下编译通过,只有最后一个需要动用C++的编译器g++才能编程通过。 hello1.c #define _________ } #define ________ putchar #define _______ main #define _(a) ________(a); #define ______ _______(){ #define __ ______ _(0x48)_(0x65)_(0x6C)_(0x6C) #define ___ _(0x6F)_(...
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程序员,你有多久没有跳出技术关注业界了? - 创意 - 清泛网 - 专注C/C++及内核技术

...是在技术领域里,尤其在计算机技术领域这是很困难的。编程语言本身种类繁多,各有所长、各有所用。产品经常迭代演进,也需要技术人员不断关注。比如做PHP开发的童鞋,应该关注到当今PHP7已经发布,而且到了RC5 版,PHP7 ...
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Linux Shell中 if else及大于、小于、等于逻辑表达式写法 - C/C++ - 清泛网...

...些决策任务时,就需要包含if/then的条件判断了。shell脚本编程支持此类运算,包括比较运算、判断文件是否存在等。 基本的if条件命令选项有: - eq —比较两个参数是否相等(例如,if [ 2 –eq 5 ]) -ne —比较两个参数是否不...
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更改MFC对话框默认的窗口类名 - C/C++ - 清泛网 - 专注C/C++及内核技术

...用已经注册的窗口类创建我们的窗口。 为了减轻我们的编程负担,也为了隐藏具体的实现,MFC已经为我们定制并注册了很多窗口类,我们可以直接使用它们。比如,对话框的窗口类为“#32770”,按钮的窗口类为“Button”,列表...