putnamhill

git

get the last commit hash in abbreviated form

 git log -n1 --pretty=format:%h

list files in another branch

git ls-files --with-tree=another-branch

putnamhill

#!/bin/bash

dmg_path="$1"

# use process redirection to capture the mount point and dev entry
IFS=$'\n' read -rd '\n' mount_point dev_entry < <(

	# mount the diskimage (leave out -readonly if making changes to the file system)
	hdiutil attach -readonly -plist "$dmg_path" | \

putnamhill

#!/bin/bash

agree() {
    local question="$1"
    
    while true; do
        read -p "$question " answer
        case $answer in
            [Yy]|[Yy][Ee][Ss]) return 0 ;;
            [Nn]|[Nn][Oo]|'') return 1 ;; # empty string is default

putnamhill

#!/bin/sh
# create remote origin and push

# use 'trunk' unless init.defaultBranch is set
default_branch=$(git config init.defaultBranch || echo 'trunk')
remote_host='your-remote-host'

# assuming the remote host has a directory in $HOME named git
toplevel=$(git rev-parse --show-toplevel)
remote_repo_path="git/${toplevel##*/}.git"

putnamhill

parse firewall rules with xslt

to run

xsltproc firewall.xsl source.xml

to test with bash

diff --report-identical-files <(xsltproc firewall.xsl source.xml) expect

putnamhill

#!/usr/bin/env bash

split() {
	local IFS="$1"
	shift
	set -- $*
	echo "$@"
}	

join() {

putnamhill

nginx snippets

internal redirects

../test-internal-redirects.conf

location = /real1 { try_files /real1.txt =404; }
location = /real2 { try_files /real2.txt =404; }

putnamhill

#!/usr/bin/perl

use strict;
use warnings;
use Getopt::Long;
use Digest::MD5;
#use diagnostics;

my $minimum = 0;
my $header = '';

putnamhill

Git current branch

The shell used in the following examples is bash, but the commands can be adapted for other shells.

reading it

Determine if working in a git repository

The goal here is to have a performant way to determine if we are in a git repo without printing anything.

git status --porcelain --untracked-files=no &>/dev/null && \

putnamhill

#!/usr/bin/env awk -f

BEGIN {
	FS = ":"
	RS = "\r\n"
	OFS = "\t"
}

/BEGIN:VTODO/ {
	my_status = ""