pnasrat

TL;DR

• Create 5GB FreeBSD image.
• Install FreeBSD on xhyve.
• Mount host directory.

Requisites

• OSX
• Homebrew
• xhyve

pnasrat

Intro

TCL-Expect scripts are an amazingly easy way to script out laborious tasks in the shell when you need to be interactive with the console. Think of them as a "macro" or way to programmaticly step through a process you would run by hand. They are similar to shell scripts but utilize the .tcl extension and a different #! call.

Setup Your Script

The first step, similar to writing a bash script, is to tell the script what it's executing under. For expect we use the following:

#!/usr/bin/expect

pnasrat

what is a shell?

Shell is a programming environment that terminal runs. it's a text based GUI for interacting with your system.

what is shell good for?

shell can give you information about your system, allows you to modify and run programs. let's try something

say "hello pris"

pnasrat

Latency Comparison Numbers
--------------------------
L1 cache reference                            0.5 ns
Branch mispredict                             5   ns
L2 cache reference                            7   ns             14x L1 cache
Mutex lock/unlock                            25   ns
Main memory reference                       100   ns             20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy              3,000   ns
Send 1K bytes over 1 Gbps network        10,000   ns    0.01 ms
Read 4K randomly from SSD*              150,000   ns    0.15 ms

pnasrat

.................F
======================================================================
FAIL: Test installing from a local directory.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\Dev\pip\ve\lib\site-packages\nose\case.py", line 197, in runTest
    self.test(*self.arg)
  File "C:\Dev\pip\tests\test_basic.py", line 287, in test_install_from_local_directory
    result = run_pip('install', to_install, expect_error=False)
  File "C:\Dev\pip\tests\test_pip.py", line 518, in run_pip

pnasrat

{
  "id": "0123456789abcdef",
  "name": "myname",
  "provider": "puppet",
  "role": "some_identifier_from_cm_system_can_be_nil?",
  "timestamp": 1290616560,
  "provisioned": "true",
  "os": {
    "name": "linux",
    "version": "2.6.35-22-generic",

pnasrat

{
  "id": "0123456789abcdef",
  "name": "myname",
  "provider": "puppet",
  "os": {
    "name": "linux",
    "version": "2.6.35-22-generic",
    "vendor": "ubuntu",
    "vendor_version": "10.10"
  },

pnasrat

import re

explicits = (
    u'\u202a', # LEFT-TO-RIGHT EMBEDDING
    u'\u202b', # RIGHT-TO-LEFT EMBEDDING
    u'\u202d', # LEFT-TO-RIGHT OVERRIDE
    u'\u202e', # RIGHT-TO-LEFT OVERRIDE
)
pdf = u'\u202c' # POP DIRECTIONAL FORMATTING

pnasrat

== Rules ==
 On Infrastructure
 -----------------
 There is one system, not a collection of systems.
 The desired state of the system should be a known quantity.
 The "known quantity" must be machine parseable.
 The actual state of the system must self-correct to the desired state.
 The only authoritative source for the actual state of the system is the system.
 The entire system must be deployable using source media and text files.