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@ofstudio
ofstudio / get_password.sh
Created December 14, 2014 16:39
Get password from OS X Keychain shell / bash function
# Get password from OS X Keychain function
# Replace %ACCOUNT_NAME% with account name of Keychain item
# See `man security` for more info
get_pw () {
security 2>&1 >/dev/null find-generic-password -ga "%ACCOUNT_NAME%" \
| sed 's/password: "\(.*\)"/\1/'
}
# Don't store server credentials in plain text!
PASS=$(get_pw)
@BlakeGardner
BlakeGardner / install nano.sh
Last active April 19, 2025 22:25
Syntax highlighting in nano on Mac OS
# Last updated May, 2024 for Apple silicon Macs
# Install Homebrew if you don't already have it: https://brew.sh
# install nano from homebrew
brew install nano nanorc
# update your nanorc file
echo 'include "'"$(brew --cellar nano)"'/*/share/nano/*.nanorc"' >> ~/.nanorc
# close and re-open your terminal and you'll have syntax highlighting
@adrienbrault
adrienbrault / purge.sh
Created September 24, 2012 10:02
Script to reduce VM size before packaging for vagrant
#!/bin/sh
# Credits to:
# - http://vstone.eu/reducing-vagrant-box-size/
# - https://github.com/mitchellh/vagrant/issues/343
aptitude -y purge ri
aptitude -y purge installation-report landscape-common wireless-tools wpasupplicant ubuntu-serverguide
aptitude -y purge python-dbus libnl1 python-smartpm python-twisted-core libiw30
aptitude -y purge python-twisted-bin libdbus-glib-1-2 python-pexpect python-pycurl python-serial python-gobject python-pam python-openssl libffi5
@jboner
jboner / latency.txt
Last active April 19, 2025 21:29
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