Category Archives: Uncategorized

Topic PXE Boot Explanation The Preboot eXecution Environment (PXE, also known as Pre-Execution Environment; sometimes pronounced “pixie”) is an environment to boot computers using a network interface independently of data storage devices (like hard disks) or installed operating systems. PXE was introduced as part of the Wired for Management framework by Intel and is described …

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$time php bubble.php real 0m7.404s user 0m7.012s sys 0m0.080s $time php bubble.php real 0m7.333s user 0m7.044s sys 0m0.068s $time php bubble.php real 0m7.393s user 0m7.068s sys 0m0.100s $time php bubble.php real 0m7.345s user 0m7.024s sys 0m0.104s $time php bubble.php real 0m7.545s user 0m7.224s sys 0m0.080s $time php bubble.php real 0m7.275s user 0m6.992s sys 0m0.072s $time …

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noxious means injurious to physical or mental health; obnoxious means very offensive, objectionable, or unpleasant source : http://thesaurus.com/browse/obnoxious

$time php bubble.php real 0m2.076s user 0m1.736s sys 0m0.052s $time php bubble.php real 0m1.8100s user 0m1.680s sys 0m0.044s $time php bubble.php real 0m1.935s user 0m1.672s sys 0m0.052s $time php bubble.php real 0m1.861s user 0m1.676s sys 0m0.040s $time php bubble.php real 0m2.076s user 0m1.708s sys 0m0.064s $time php bubble.php real 0m1.850s user 0m1.640s sys 0m0.060s $time …

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The atime and noatime attribute Linux records information about when files were created and last modified as well as when it was last accessed. There is a cost associated with recording the last access time. The ext2 file system of Linux has an attribute that allows the super-user to mark individual files such that their …

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$time php bubble.php real 0m0.846s user 0m0.388s sys 0m0.036s $time php bubble.php real 0m0.707s user 0m0.368s sys 0m0.032s $time php bubble.php real 0m0.718s user 0m0.384s sys 0m0.024s $time php bubble.php real 0m0.768s user 0m0.372s sys 0m0.036s $time php bubble.php real 0m0.556s user 0m0.432s sys 0m0.024s $time php bubble.php real 0m0.476s user 0m0.372s sys 0m0.040s $time …

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A UNIX Command $lsattr test.ogg ——————- test.ogg $chattr +u test.ogg $lsattr test.ogg -u—————– test.ogg $chattr -u test.ogg $lsattr test.ogg ——————- test.ogg $chattr =u test.ogg $lsattr test.ogg -u—————– test.ogg $chattr +i test.ogg chattr: Operation not permitted while setting flags on test.ogg $sudo chattr +i test.ogg [sudo] password for jeffrin: $lsattr test.ogg -u–i————– test.ogg $rm test.ogg rm: …

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$time php bubble.php real 0m0.366s user 0m0.212s sys 0m0.032s $time php bubble.php real 0m0.231s user 0m0.188s sys 0m0.020s $time php bubble.php real 0m0.191s user 0m0.132s sys 0m0.040s $time php bubble.php real 0m0.192s user 0m0.148s sys 0m0.028s $time php bubble.php real 0m0.190s user 0m0.140s sys 0m0.032s $time php bubble.php real 0m0.191s user 0m0.144s sys 0m0.028s $time …

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$time php bubble.php real 0m0.318s user 0m0.068s sys 0m0.040s $time php bubble.php real 0m0.171s user 0m0.092s sys 0m0.032s $time php bubble.php real 0m0.169s user 0m0.084s sys 0m0.036s $time php bubble.php real 0m0.153s user 0m0.072s sys 0m0.036s $time php bubble.php real 0m0.154s user 0m0.080s sys 0m0.032s $time php bubble.php real 0m0.145s user 0m0.080s sys 0m0.024s $time …

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$time php bubble.php real 0m0.133s user 0m0.084s sys 0m0.028s $