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Revert the full commit

Sometimes you may want to undo a whole commit with all changes. Instead of going through all the changes manually, you can simply tell git to revert a commit, which does not even have to be the last one. Reverting a commit means to create a new commit that undoes all changes that were made in the bad commit. Just like above, the bad commit remains there, but it no longer affects the the current master and any future commits on top of it.

git revert {commit_id}'

About History Rewriting

Delete the last commit

Deleting the last commit is the easiest case. Let's say we have a remote origin with branch master that currently points to commit dd61ab32. We want to remove the top commit. Translated to git terminology, we want to force the master branch of the origin remote repository to the parent of dd61ab32:

Jing-Xie

##Working with ansible-vault

I've been using a lot of Ansible lately and while almost everything has been great, finding a clean way to implement ansible-vault wasn't immediately apparent.

What I decided on was the following: put your secret information into a vars file, reference that vars file from your task, and encrypt the whole vars file using ansible-vault encrypt.

Let's use an example: You're writing an Ansible role and want to encrypt the spoiler for the movie Aliens.

Jing-Xie

Demo

Jing-Xie

"""
Tools for creating a CA cert and signed server certs.
Divined from http://svn.osafoundation.org/m2crypto/trunk/tests/test_x509.py

The mk_temporary_xxx calls return a NamedTemporaryFile with certs.

Usage ;

   # Create a temporary CA cert and it's private key
   cacert, cakey = mk_temporary_cacert()

Jing-Xie

#!/bin/sh
SDK=`dirname $0`
SCRIPT=`basename $0`
SDKPARENT=`dirname $SDK`

PLATFORM=`uname -sp`
if [ "$PLATFORM" = "Darwin i386" -o "$PLATFORM" = "Darwin x86_64" ]; then

echo "iPhone Toolchain installer script by rpetrich"
echo ""