jclosure’s gists

jclosure / emacs_find_keys

Created April 28, 2015 06:03

Get Emacs Keys for Function or Function for Keys



	You can get help for a command by typing

	C-h f function-name
	This will usually tell you if it has a standard key binding. Conversely, given a key sequence, you can type

	C-h k key-sequence
	To get the command that would run. For more help on getting help, you can type

jclosure / undo-tree-hints

Last active August 29, 2015 14:20

Emacs undo-tree hints

	Active undoo-tree with C-x u

	Move up,down,left, and right the tree with up/down/left/right arrow

	In the tree window you can enable timestamps and diffs with t and d

	;; t (`undo-tree-visualizer-toggle-timestamps')
	;; Toggle display of time-stamps.
	;;
	;; d (`undo-tree-visualizer-toggle-diff')

jclosure / jetty-in-nrepl

Created May 28, 2015 05:09

starting and stopping jetty from inside an nrepl session

	(use 'ring.adapter.jetty)

	(defn app-handler [request]
	{:status 200
	:headers {"Content-Type" "text/html"}
	:body (str request)})

	(defonce server (run-jetty #'app-handler {:port 3000 :join? false}))

	(.start server)

jclosure / trim_es_index_by_date.sh

Created June 4, 2015 20:50

Bash Script to Trim Elasticsearch By Date Indexes

	#!/bin/bash

	DAYS_AGO=$1

	TARGET_INDEX=logstash-`date --date="$DAYS_AGO days ago" +%Y.%m.%d`;

	if [[ "$DAYS_AGO" ]]; then
	# echo "computed target index: $TARGET_INDEX"
	curl -XDELETE "http://localhost:9200/$TARGET_INDEX"
	else

jclosure / docker_reverting

Created June 5, 2015 08:07

How to revert a docker container to a previous commit

	$ docker history imagename
	IMAGE CREATED CREATED BY SIZE
	f770fc671f11 12 seconds ago apt-get install -y curl 21.3 MB
	28445c70c2b3 39 seconds ago apt-get install ping 11.57 MB
	8dbd9e392a96 7 months ago 131.5 MB

	$ docker tag 2844 imagename # <-- that's the secret right there

	$ docker history imagename
	IMAGE CREATED CREATED BY SIZE

jclosure / gist:67c27ebf0747c95f3e4a

Last active August 29, 2015 14:27

install emacs from src HEAD via homebrew


	brew install -v emacs --HEAD --use-git-head --with-cocoa --srgb

jclosure / compile_sql_lite_w_gem_install_windows

Created September 4, 2015 04:47

How to compile sqlite3 in windows and install gem


	1. Download the SQLite source amalgamation from
	http://sqlite.org/download.html
	2. unpack the source in a directory of your choice (e.g. C:\sqlite3)
	3. be sure to have the Ruby DevKit installed and enabled the DevKit
	environment
	4. compile the DLL, I used following command:

	gcc -Os -O2 -DSQLITE_ENABLE_FTS4 -DSQLITE_ENABLE_RTREE
	-DSQLITE_ENABLE_COLUMN_METADATA --shared sqlite3.c -o sqlite3.dll

jclosure / multi-threading with perl example

Created September 17, 2015 16:47

multi-threading with perl example


	#!/opt/local/bin/perl -w
	use threads;
	use strict;
	use warnings;

	# SOURCE REF: http://chicken.genouest.org/perl/multi-threading-with-perl/

	my @a = ();
	my @b = ();

jclosure / bash-file-ensure-skeleteon.sh

Created September 17, 2015 20:00

skeletal starter for scripts that require files in fs as args

	#!/bin/bash

	FILE=$1

	##################################################################################
	function usage(){
	echo "usage: $(basename $0) /path/to/java-rpm-file.rpm"
	}
	##################################################################################

jclosure / proper-way-to-install-java-in-rhel

Created September 21, 2015 19:20

This is the proper way to install java in rhel/centos

	# installation via rpm

	jdk-8u60-linux-x64.rpm

	rpm -Uvh jdk-8u60-linux-x64.rpm

	alternatives --config java
	alternatives --config javaws
	alternatives --config libjavaplugin.so
	alternatives --config libjavaplugin.so.x86_64

Joel Holder jclosure