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What is the difference between buffer and cache memory in Linux?
...er caches. Since 2.4, the page and buffer cache are unified and Buffers is raw disk blocks not represented in the page cache—i.e., not file data. The Buffers metric is thus of minimal importance. On most systems, Buffers is often only tens of megabytes.
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An efficient way to transpose a file in Bash
...es an array for the input lines after parsing each line as JSON, and -r (--raw-output) outputs the contents of strings instead of JSON string literals. The / operator is overloaded to split strings.
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Test a weekly cron job [closed]
...stLog
parseArgs "$@"
log "crontest starting at $(date)"
log "Raw command line: $@"
log "Inner args: $@"
log "screenBin: $screenBin"
log "useBashdb: $( if $useBashdb; then echo YES; else echo no; fi )"
log "useScreen: $( if $useScreen; then echo YES; else echo no; fi )"
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What is the relative performance difference of if/else versus switch statement in Java?
...s which gives a much more performance gain than only (micro)optimizing the raw Java code.
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What is the difference between XMLHttpRequest, jQuery.ajax, jQuery.post, jQuery.get
...
XMLHttpRequest is the raw browser object that jQuery wraps into a more usable and simplified form and cross browser consistent functionality.
jQuery.ajax is a general Ajax requester in jQuery that can do any type and content requests.
jQuery.get a...
Git branching: master vs. origin/master vs. remotes/origin/master
...HEAD": the transfer protocols can't send an indirect branch at all, just a raw SHA-1, so git has a kludge that makes this "mostly work". Every once in a while someone stumbles across a weird case though. I kind of wish git did not create remotes/origin/HEAD at all, especially when it comes out wro...
How to use Sublime over SSH
...stall the 'subl' shell command):
sudo wget -O /usr/local/bin/subl https://raw.github.com/aurora/rmate/master/rmate; sudo chmod +x /usr/local/bin/subl
And voila! You're now using Sublime Text over SSH.
You can open an example file in Sublime Text from the server with something like subl ~/test.t...
How much faster is Redis than mongoDB?
...will analyze the performance of the machine you are on. There is a ton of raw data from it at the Benchmark wiki for Redis. But you might have to look around a bit for Mongo. Like here, here, and some random polish numbers (but it gives you a starting point for running some MongoDB benchmarks yours...
ObservableCollection Doesn't support AddRange method, so I get notified for each item added, besides
...ith range operations, but I still didn't have the time to implement this.
RAW Code - open as Raw, then do Ctrl+A to select all, then Ctrl+C to copy.
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the L...
How do I install cygwin components from the command line?
...above
steps and then use Cygwin Bash for the following steps
wget https://raw.githubusercontent.com/transcode-open/apt-cyg/master/apt-cyg
chmod +x apt-cyg
mv apt-cyg /usr/local/bin
Now that apt-cyg is installed. Here are few examples of
installing some packages
apt-cyg install nano
apt-cyg insta...