Going without sleep can become dangerous quickly, with symptoms like cognitive impairment and hallucinations appearing after just a few nights. After 24, 36, 48, and 72 hours without sleep, problems ...
How-To Geek on MSN
The 6 test patterns that real-world Bash scripts actually use
Check if a file is really a file, whether a string contains anything, and whether you can run a program with these vital patterns.
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