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@ivar
ivar / spacemacs global search and replace.md
Last active August 1, 2022 00:04
spacemacs - global search and replace

There's a couple of ways, one way is

  • Get search results
    • Do SPC / and type in your search string
    • or SPC x S and search string - where x is your scope indicator (p for project, d for directory, etc..)
  • Once you have the occurences you want, hit C-c C-e inside the helm buffer to put all your match occurences and puts them into a special buffer called the edit buffer or something like that
  • in that buffer you can use any commands you'd normally use on a buffer
  • the C-c C-c to commit your changes.
@onlurking
onlurking / slideshare-dl.py
Last active October 20, 2019 02:33
An Slideshare Presentation Downloader written with Python 3 and Insomnia, now only requires img2pdf and BeautifulSoup.
import argparse
import urllib.request
import os
import img2pdf
from os import walk
from os.path import join
from bs4 import BeautifulSoup
work_dir = os.path.dirname(__file__)
@526avijitgupta
526avijitgupta / spacemacs-cheatsheet.md
Last active August 29, 2023 12:31
Spacemacs cheatsheet

emacs --daemon to run in the background. emacsclient.emacs24 <filename/dirname> to open in terminal

NOTE: "M-m and SPC can be used interchangeably".

  • Undo - C-/
  • Redo - C-?
  • Change case: 1. Camel Case : M-c 2. Upper Case : M-u
  1. Lower Case : M-l
# Hello, and welcome to makefile basics.
#
# You will learn why `make` is so great, and why, despite its "weird" syntax,
# it is actually a highly expressive, efficient, and powerful way to build
# programs.
#
# Once you're done here, go to
# http://www.gnu.org/software/make/manual/make.html
# to learn SOOOO much more.
@willurd
willurd / web-servers.md
Last active June 1, 2026 13:16
Big list of http static server one-liners

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000
@jboner
jboner / latency.txt
Last active June 3, 2026 18:49
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
@sillage
sillage / gist:1944623
Created February 29, 2012 21:37
piratebay magnet scrape
use warnings;
use strict;
use Parallel::ForkManager;
use 5.010;
my $pm=new Parallel::ForkManager(50);
use Fcntl qw(:flock SEEK_END);
$pm->run_on_finish(sub{
my (undef, undef, undef, undef, undef, $res_ref) = @_;
@katylava
katylava / git-selective-merge.md
Last active February 11, 2026 09:00
git selective merge

Update 2022: git checkout -p <other-branch> is basically a shortcut for all this.

FYI This was written in 2010, though I guess people still find it useful at least as of 2021. I haven't had to do it ever again, so if it goes out of date I probably won't know.

Example: You have a branch refactor that is quite different from master. You can't merge all of the commits, or even every hunk in any single commit or master will break, but you have made a lot of improvements there that you would like to bring over to master.

Note: This will not preserve the original change authors. Only use if necessary, or if you don't mind losing that information, or if you are only merging your own work.