Skip to content

Instantly share code, notes, and snippets.

@pswaminathan
pswaminathan / gist:4056993
Last active October 12, 2015 16:47 — forked from saetia/gist:1623487
Clean Install – Mountain Lion OS X 10.8
@pswaminathan
pswaminathan / extract_function.sh
Created August 6, 2013 19:51
Function to extract most typical kinds of files, without needing to remember all the damn flags.
# Extract Files
extract() {
if [ -f $1 ] ; then
case $1 in
*.tar.bz2) tar xvjf $1 ;;
*.tar.gz) tar xvzf $1 ;;
*.tar.xz) tar xvJf $1 ;;
*.bz2) bunzip2 $1 ;;
*.rar) unrar x $1 ;;
*.gz) gunzip $1 ;;
@pswaminathan
pswaminathan / email_address_regex.txt
Created October 3, 2013 21:43
Regex for matching email addresses
^[\w.%+-]+@(?:[\w-]+\.)+[A-Za-z]{2,4}$
Explanation:
^ # Start of string. If searching in-line replace with \b
[\w.%+-]+ # Matches alphanumeric, _, ., %, +, or - repeatedly
@ # name-domain separator
(?:
[\w-]+ # Matches alphanumeric or - repeatedly
\. # Matches dot in domain separator
)+ # Matches for one domain or for multiple subdomains

Exporting (iCloud) Keychain and Safari credentials to a CSV file

After my dad died, I wanted to be able to have access any of his online accounts going forward. My dad was a Safari user and used iCloud Keychain to sync his credentials across his devices. I don’t want to have to keep an OS X user account around just to access his accounts, so I wanted to export his credentials to a portable file.

This is the process I used to create a CSV file of his credentials in the format “example.com,user,pass”. This portable format would be pretty easy to import into 1Password or Safari in the future.

The way I went about this isn’t great; it opens up more opportunities for apps to control one’s Mac through Accessibility APIs, it writes plaintext passwords to disk, and it could use some cleaning up. A better approach might leverage the security command line tool that ships with OS X. That said, I found this method to be a fun illustration of what’s possible us

@pswaminathan
pswaminathan / git-stack
Created April 2, 2020 15:18
Git stack
#!/bin/sh
#
# git-stack: Push this commit to a branch specified in its
# commit description.
#
# -- IMPORTANT -- this script is for macOS (using BSD sed)
#
# Taken from https://wchargin.github.io/posts/managing-dependent-pull-requests/
# Copyright (c) 2017 William Chargin. Released under the MIT license.