Et7f3

Antiquotation (${expr}) is supported in indented strings.

Since ${ and '' have special meaning in indented strings, you need a way to quote them. ${ can be escaped by prefixing it with '' (that is, two single quotes), i.e., ''${. '' can be escaped by prefixing it with ', i.e., '''. Finally, linefeed, carriage-return and tab characters can be written as ''\n, ''\r, ''\t.

https://nixos.org/nix/manual/#idm140737318143872

JQ to filter JSON by value

Syntax: cat <filename> | jq -c '.[] | select( .<key> | contains("<value>"))'

Example: To get json record having _id equal 611

cat my.json | jq -c '.[] | select( ._id | contains(611))'

Remember: if JSON value has no double quotes (eg. for numeric) to do not supply in filter i.e. in contains(611)

README

The example below creates a TCP server listening on a stream (i.e. SOCK_STREAM) socket. A similar approach can be followed to create a UDP server on a datagram (i.e. SOCK_DGRAM) socket. See man systemd.socket for details.

An example server

Create an simple echo server at ~/tmp/foo/serve.py.

	{
	systemd.services.pure-ftpd = {
	description = "PureFTPD Server";
	wantedBy = [ "multi-user.target" ];
	serviceConfig = {
	# -e only Anon -M allow Dirs
	ExecStart = "${pkgs.pure-ftpd}/bin/pure-ftpd -e -M -p 30000:50000";
	Type = "simple";
	};
	};

	# To host on root path just use "<Location />" for http://mydomainname.in
	# To host on non-root path use "<Location /myreactapp>" for http://mydomainname.in/mypath
	# If non-root path, don't forgot to add "homepage": "/myreactapp" in your app's package.json
	<VirtualHost *:80>
	ServerName mydomainname.in
	DirectoryIndex index.html
	DocumentRoot /var/www/html

	ErrorLog ${APACHE_LOG_DIR}/error.log
	CustomLog ${APACHE_LOG_DIR}/access.log combined

	(*
	An incomplete implementation of a type-safe SQL query in F#.

	The idea is that a query is built up clause by clause, by representing
	each additional clause being added on to the query as a state transition
	between different types of queries. We capture these different types as
	phantom types to make sure that only valid transitions (query clause
	additions) as defined by us can be carried out.

	The final result is a 'total query' that can be converted to a string,

	#!/usr/bin/env python3
	# This script is designed to do one thing and one thing only. It will find each
	# of the FlateDecode streams in a PDF document using a regular expression,
	# unzip them, and print out the unzipped data. You can do the same in any
	# programming language you choose.
	#
	# This is NOT a generic PDF decoder, if you need a generic PDF decoder, please
	# take a look at pdf-parser by Didier Stevens, which is included in Kali linux.
	# https://tools.kali.org/forensics/pdf-parser.
	#


	(* Good morning everyone, I'm currently learning ocaml for one of my CS class and needed to implement
	an avl tree using ocaml. I thought that it would be interesting to go a step further and try
	to verify the balance property of the avl tree using the type system. Here's the resulting code
	annotated for people new to the ideas of type level programming :)
	*)

	(* the property we are going to try to verify is that at each node of our tree, the height difference between
	the left and the right sub-trees is at most of 1. *)

	#!/usr/bin/env python
	#
	# Red Hat Satellite Dynamic Inventory for Ansible
	# Copyright 2016 by Fotis Gimian (MIT License)
	#
	# Set your inventory to point to this script and ensure the script is
	# executable. You'll need an INI file with Satellite details of the following
	# style (whereby you may specify one or more Satellite servers):
	#
	# [satellite]

	/**
	* USB HID Keyboard scan codes as per USB spec 1.11
	* plus some additional codes
	*
	* Created by MightyPork, 2016
	* Public domain
	*
	* Adapted from:
	* https://source.android.com/devices/input/keyboard-devices.html
	*/