This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.
To capture the video (filesize: 19MB), using the free "QuickTime Player" application:
# Reset-LocalAccountPassword.ps1 | |
# Written by Bill Stewart (bstewart@iname.com) | |
#requires -version 2 | |
<# | |
.SYNOPSIS | |
Resets the built-in Administrator account or a named local account password on one or more computers. | |
.DESCRIPTION |
// gcc crc.c -std=c99 -o crctest | |
#include <inttypes.h> | |
#include <stdio.h> | |
uint8_t crcTable[256]; | |
uint8_t CalcCRC(uint8_t * buf, uint8_t len); | |
void CRCInit(void); |
That’s one of the real strengths of Docker: the ability to go back to a previous commit. The secret is simply to docker tag the image you want. | |
Here’s an example. In this example, I first installed ping, then committed, then installed curl, and committed that. Then I rolled back the image to contain only ping: | |
$ 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 |