DmitrySoshnikov

/**
 * Depth-first and Breadth-first graph traversals.
 *
 * In this diff we implement non-recursive algorithms for DFS,
 * and BFS maintaining an explicit stack and a queue.
 *
 * by Dmitry Soshnikov <dmitry.soshnikov@gmail.com>
 * MIT Style license
 */

CAFxX

📂 Persistent "pipes" in Linux

In a project I'm working on I ran into the requirement of having some sort of persistent FIFO buffer or pipe in Linux, i.e. something file-like that could accept writes from a process and persist it to disk until a second process reads (and acknowledges) it. The persistence should be both across process restarts as well as OS restarts.

AFAICT unfortunately in the Linux world such a primitive does not exist (named pipes/FIFOs do not persist

tsiege

ANNOUNCEMENT

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!






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mtigas

Client-side SSL

For excessively paranoid client authentication.

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Updated Apr 5 2019:

because this is a gist from 2011 that people stumble into and maybe you should AES instead of 3DES in the year of our lord 2019.

some other notes:

guilhermechapiewski

#!/bin/bash
# Usage: colored_tail.sh [logfile]
tail -f ${1} | perl -pe 's/^\[DEBUG\].*$/\e[35m$&\e[0m/g;s/^\[INFO\].*$/\e[36m$&\e[0m/g;s/^\[WARN\].*$/\e[33m$&\e[0m/g;s/^\[ERROR\].*$/\e[31m$&\e[0m/g;'