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Command line to remove an environment variable from the OS level configuration
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Ah! What do you suppose the rational is for that?? I always avoid admin as much as possible - UNIX/BSD/Linux upbringing. Thanks a mil for the awesome diligence. +1
– caasjj
Apr 5 '16 at 20:36
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How can I Remove .DS_Store files from a Git repository?
How can I remove those annoying Mac OS X .DS_Store files from a Git repository?
25 Answers
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Is JavaScript an untyped language?
...licit compiler interjection, the instruction will error during run-time.
"12345" * 1 === 12345 // string * number => number
Strongly typed means there is a compiler, and it wants you an explicit cast from string to integer.
(int) "12345" * 1 === 12345
In either case, some compiler's featur...
How to convert std::string to lower case?
...aracters allowed in the french language. For instance a string 'Test String123. É Ï\n' will be converted to : 'test string123. É Ï\n' although characters É Ï and their lower case couterparts 'é' and 'ï', are allowed in french. It seems that no solution for that was provided by other message...
Fastest way to check if a string is JSON in PHP?
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$phone = '021234567'; var_dump(isJson($phone)); return true no! it should return false.
– vee
Jan 2 '14 at 17:12
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Cast a Double Variable to Decimal
...hould use the M when declaring a new literal decimal value:
decimal dec = 123.45M;
(Without the M, 123.45 is treated as a double and will not compile.)
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Converting newline formatting from Mac to Windows
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In conclusion, simply replace every occurence of \n by \r\n.
Both unix2dos and dos2unix are not by default available on Mac OSX.
Fortunately, you can simply use Perl or sed to do the job:
sed -e 's/$/\r/' inputfile > outputfile # UNIX to DOS (adding CRs)
sed -e 's/\r$//' input...
How do I deploy Node.js applications as a single executable file? [duplicate]
Supposed I have written a Node.js application, and I now would like to distribute it. Of course, I want to make it easy for the user, hence I do not want him to install Node.js, run npm install and then manually type node app.js .
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Why is Linux called a monolithic kernel?
...ion, etc.) are a tight knit group sharing the same space. This directly opposes a microkernel.
A microkernel prefers an approach where core functionality is isolated from system services and device drivers (which are basically just system services). For instance, VFS (virtual file system) and block...
Shell脚本编程30分钟入门 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...文本编辑器和一个能解释执行的脚本解释器就可以了。
OS
当前主流的操作系统都支持shell编程，本文档所述的shell编程是指Linux下的shell，讲的基本都是POSIX标准下的功能，所以，也适用于Unix及BSD（如Mac OS）。
Linux
Linux默认安...