Danil Braun danilbraun

Linux - Systemd cheatsheet

Activates a service immediately:

systemctl start foo.service

Deactivates a service immediately:

In this guide, domain.com will be your root domain and mail.domain.com will be the hostname of your mail server

Общяя информация:

Мотивация

Here's a record of my experiences when setting up Void Linux for the first time, maybe it contains useful information for somebody :-)

--

~~scph5500.bin 26-Aug-2018 20:47 512.0K~~

	Memoization is fundamentally a top-down computation and dynamic
	programming is fundamentally bottom-up. In memoization, we observe
	that a computational tree can actually be represented as a
	computational DAG (the single most underrated data structure in
	computer science); we then use a black-box to turn the tree into a
	DAG. But it allows the top-down description of the problem to remain
	unchanged.

	In dynamic programming, we make the same observation, but construct
	the DAG from the bottom-up. That means we have to rewrite the

	(defun clocktable-by-tag/shift-cell (n)
	(let ((str ""))
	(dotimes (i n)
	(setq str (concat str "\| ")))
	str))

	(defun clocktable-by-tag/insert-tag (params)
	(let ((tag (plist-get params :tags)))
	(insert "\|--\n")
	(insert (format "\| %s \| Tag time \|\n" tag))


	FILE SPACING:

	# double space a file
	sed G

	# double space a file which already has blank lines in it. Output file
	# should contain no more than one blank line between lines of text.
	sed '/^$/d;G'

	(* interleave 1 [2;3] = [ [1;2;3]; [2;1;3]; [2;3;1] ] *)
	let rec interleave x lst =
	match lst with
	\| [] -> [[x]]
	\| hd::tl -> (x::lst) :: (List.map (fun y -> hd::y) (interleave x tl))

	(permutations [1; 2; 3] = [[1; 2; 3]; [2; 1; 3]; [2; 3; 1]; [1; 3; 2]; [3; 1; 2]; [3; 2; 1]] )
	let rec permutations lst =
	match lst with
	\| hd::tl -> List.concat (List.map (interleave hd) (permutations tl))

	#!/usr/bin/env python
	# encoding: utf-8

	import lxml.etree
	import lxml.html
	import requests

	xml_sample = """<?xml version="1.0" encoding="UTF-8"?>
	<foo:Results xmlns:foo="http://www.foo.com" xmlns="http://www.bah.com">
	<foo:Recordset setCount="2">