toolness

Adventures in Python Core Dumping

After watching Bryan Cantrill's presentation on [Running Aground: Debugging Docker in Production][aground] I got all excited (and strangely nostalgic) about the possibility of core-dumping server-side Python apps whenever they go awry. This would theoretically allow me to fully inspect the state of the program at the point it exploded, rather than relying solely on the information of a stack trace.

t-mart

Map	Action
<F1>	Causes Netrw to issue help
<cr>	Netrw will enter the directory or read the file
<del>	Netrw will attempt to remove the file/directory
-	Makes Netrw go up one directory
a	Toggles between normal display, hiding (suppress display of files matching g:netrw_list_hide) showing (display only files which match g:netrw_list_hide)
c	Make browsing directory the current directory
C	Setting the editing window
d	Make a directory

Lerg

#!/bin/sh
base=$1
convert "$base" -resize '29x29'     -unsharp 1x4 "Icon-Small.png"
convert "$base" -resize '40x40'     -unsharp 1x4 "Icon-Small-40.png"
convert "$base" -resize '50x50'     -unsharp 1x4 "Icon-Small-50.png"
convert "$base" -resize '57x57'     -unsharp 1x4 "Icon.png"
convert "$base" -resize '58x58'     -unsharp 1x4 "[email protected]"
convert "$base" -resize '60x60'     -unsharp 1x4 "Icon-60.png"
convert "$base" -resize '72x72'     -unsharp 1x4 "Icon-72.png"
convert "$base" -resize '76x76'     -unsharp 1x4 "Icon-76.png"

bwhaley

import logging
import logging.config
import sumologger
from sumologger import SumoHTTPHandler

logging.config.dictConfig(sumologger.LOGGING)
logger = logging.getLogger("sumologger")
logger.debug("Nifty log message")

grenade

#!/bin/bash

mkdir -p ~/.ssh

# generate new personal ed25519 ssh keys
ssh-keygen -o -a 100 -t ed25519 -f ~/.ssh/id_ed25519 -C "rob thijssen <[email protected]>"
ssh-keygen -o -a 100 -t ed25519 -f ~/.ssh/id_robtn -C "rob thijssen <[email protected]>"

# generate new host cert authority (host_ca) ed25519 ssh key
# used for signing host keys and creating host certs

dmarx

import praw # simple interface to the reddit API, also handles rate limiting of requests
import re
from collections import deque 
from time import sleep

USERNAME  = "Your username here"
PASSWORD  = "Your password here"
USERAGENT = "Your useragent string here. It should include your /u/username as a courtesy to reddit"

r = praw.Reddit(USERAGENT)

KartikTalwar

The fastest remote directory rsync over ssh archival I can muster (40MB/s over 1gb NICs)

This creates an archive that does the following:

rsync (Everyone seems to like -z, but it is much slower for me)

• a: archive mode - rescursive, preserves owner, preserves permissions, preserves modification times, preserves group, copies symlinks as symlinks, preserves device files.
• H: preserves hard-links
• A: preserves ACLs

mattratleph

vimdiff cheat sheet

##git mergetool

In the middle file (future merged file), you can navigate between conflicts with ]c and [c.

Choose which version you want to keep with :diffget //2 or :diffget //3 (the //2 and //3 are unique identifiers for the target/master copy and the merge/branch copy file names).

:diffupdate (to remove leftover spacing issues)

:only (once you’re done reviewing all conflicts, this shows only the middle/merged file)

alexmchale

#!/usr/bin/env ruby

# Make sure we're at the root of a git repository.
if ! File.directory? ".git"
  puts "please run this from the root of a git repository"
  exit 1
end

# Get a list of dangling commits from fsck.
fsck = `git fsck --lost-found 2>&1 | grep "dangling commit"`

khakimov

echo -e "\e[1;40m" ; clear ; while :; do echo $LINES $COLUMNS $(( $RANDOM % $COLUMNS)) $(( $RANDOM % 72 )) ;sleep 0.05; done|awk '{ letters="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789@#$%^&*()"; c=$4; letter=substr(letters,c,1);a[$3]=0;for (x in a) {o=a[x];a[x]=a[x]+1; printf "\033[%s;%sH\033[2;32m%s",o,x,letter; printf "\033[%s;%sH\033[1;37m%s\033[0;0H",a[x],x,letter;if (a[x] >= $1) { a[x]=0; } }}'