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How to mkdir only if a directory does not already exist?

...t to run under the KornShell (ksh) on AIX. I would like to use the mkdir command to create a directory. But the directory may already exist, in which case I do not want to do anything. So I want to either test to see that the directory does not exist, or suppress the "File exists" error that mkdi...
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Where is the .NET Framework 4.5 directory?

... Thanks, but what about this page from MSDN. msdn.microsoft.com/en-us/library/bb397428. It mentions a 4.5.0.0 directory? – Nick Randell Aug 22 '12 at 9:56 ...
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How to use a switch case 'or' in PHP

... edited Dec 20 '16 at 11:11 Community♦ 111 silver badge answered Oct 16 '08 at 0:26 user19302user19302 ...
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Blurry text after using CSS transform: scale(); in Chrome

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gulp command not found - error after installing gulp

...tall the gulp-cli package: npm install -g gulp-cli Then you can run the command "gulp" from the command line. share | improve this answer | follow | ...
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Shell one liner to prepend to a file

This is probably a complex solution . 32 Answers 32 ...
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Coalesce function for PHP?

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Regular Expression to match string starting with “stop”

... Depends on your language... Perl compatible can use the I modifier. /regex/i .NET RegexOptions.IgnoreCase and so on – Vinko Vrsalovic Jun 19 '18 at 19:49 ...
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How to set HTTP header to UTF-8 using PHP which is valid in W3C validator?

...ly the appropriate header. In fact saving your php file as utf-8, would accomplish the same thing. – Rahly Nov 25 '10 at 16:59 ...
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How do I split a string into an array of characters? [duplicate]

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