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Nodejs Event Loop
...of event driven model with the help of an abstract example, in an abstract UNIX environment, in Node's context, as of today.
Program's perspective:
Script engine starts execution of the script.
Any time a CPU bound operation is encountered, it is executed inline (real machine), in its completenes...
How to implement common bash idioms in Python? [closed]
...
Any shell has several sets of features.
The Essential Linux/Unix commands. All of these are available through the subprocess library. This isn't always the best first choice for doing all external commands. Look also at shutil for some commands that are separate Linux commands, but...
When should I use a trailing slash in my URL?
...trailing slashes are misused.
Basically the URL format came from the same UNIX format of files and folders, later on, on DOS systems, and finally, adapted for the web.
A typical URL for this book on a Unix-like operating system would be a file path such as file:///home/username/RomeoAndJuliet.p...
Cleanest and most Pythonic way to get tomorrow's date?
...
This is because Unix time doesn't handle leap seconds. See en.wikipedia.org/wiki/Unix_time#History, mail-archive.com/leapsecs@rom.usno.navy.mil/msg00094.html, and POSIX itself.
– Roger Pate
Nov 29 '09 ...
Find which commit is currently checked out in Git
...bbreviated parent hashes
%an author name
%ae author email
%at author date, UNIX timestamp
%aI author date, strict ISO 8601 format
%cn committer name
%ce committer email
%ct committer date, UNIX timestamp
%cI committer date, strict ISO 8601 format
%s subject
%f sanitized subject line, suitable for a ...
Running shell command and capturing the output
...
This is way easier, but only works on Unix (including Cygwin) and Python2.7.
import commands
print commands.getstatusoutput('wc -l file')
It returns a tuple with the (return_value, output).
For a solution that works in both Python2 and Python3, use the subpro...
dd: How to calculate optimal blocksize? [closed]
...d its version), and the various hardware buses and disks involved. Several Unix-like systems (including Linux and at least some flavors of BSD) define the st_blksize member in the struct stat that gives what the kernel thinks is the optimal block size:
#include <sys/stat.h>
#include <stdio...
“Incorrect string value” when trying to insert UTF-8 into MySQL via JDBC?
...ntu0.16.04.1 (Ubuntu)
Protocol version: 10
Connection: Localhost via UNIX socket
Server characterset: utf8
Db characterset: utf8
Client characterset: utf8
Conn. characterset: utf8
UNIX socket: /var/run/mysqld/mysqld.sock
Uptime: 42 min 49 sec
Threads: 1 Questi...
How to load/edit/run/save text files (.py) into an IPython notebook cell?
...n notebook (now Jupyter notebook) is so cool that it allows you to use any unix command right from the cell (this is also equivalent to using the %%bash cell magic command).
To run a unix command from the cell, just precede your command with ! mark. for example:
!python --version see your python ...
The Definitive C Book Guide and List
...rogramming by Example - John W. Perry (1998).
Advanced Programming in the UNIX Environment - Richard W. Stevens and Stephen A. Rago (2013). Comprehensive description of how to use the Unix APIs from C code, but not so much about the mechanics of C coding.
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Essential C (Free PDF...