Perforce Client Setup

I got it from here.

1. Export environment variable
$ export P4CONFIG=.p4config

2. Create workspace directory
$ cd /auto/home/delacs/projects/autoselect_feature
$ mkdir code

3. Create p4 config file, name of client will be 'delacs-autoselect-feature'
$ vi .p4config
P4CLIENT=delacs-autoselect-feature
P4PORT=server.domain.com:1666

4. Create the client
$ p4 client

In text editor:
Client: delacs-autoselect-feature
Root:  /auto/home/delacs/projects/autoselect_feature
View: //tools/main/perf/scripts/scheduler/... //delacs-autoselect-feature/code/scheduler/...
      //tools/parser/... //delacs-autoselect-feature/code/parser/...

5. Now, let's pull down code from perforce
$ p4 sync

Get Latest Records SQL

Using this SQL:

SELECT sb1.date, sb1.branch, sb1.build
FROM stable_builds sb1
INNER JOIN (
    SELECT max(date) date, branch
    FROM stable_builds
    GROUP BY branch
) AS sb2
ON sb1.branch = sb2.branch
AND sb1.date = sb2.date
ORDER BY date DESC

Data:
Date Branch Build   
2014-11-24 5.6 460049
2014-11-19 5.6 459641
2014-11-16 5.6 459347

Output:
Date Branch Build   
2014-11-24 5.6 460049

Rails - Separate Seeds Using Seedbank

Seedbank gives your Rails seed data a little structure. Create seeds for each environment, share seeds between environments and specify dependencies to load your seeds in order. All nicely integrated with simple rake tasks. This is how I quickly used it:

1.  Put in Gemfile:
gem "seedbank"

2. Install
$ bundle install

3. Create the specific seed file:
$ vi db/seeds/performance_translations.seeds.rb
translations = [
  ["r-high-0001","1-read high-generation"],
  ["r-high-0008","8-read high-generation"],
  ["r-high-0016","16-read high-generation"]
]
translations.each do |int, ext|
  PerformanceTranslation.find_or_create_by_internal(internal: int, external: ext)
end

4. Run via rake
$ rake db:seed:performance_translations

Schedule rake using cron on rvm environment

Little tricky to get this going. The key is knowing rvm environment.

$ rvm env --path
/auto/home3/delacs/.rvm/environments/ruby-2.0.0-p353@RailsDev

For rvm, basic command line tools like gem, rake and ruby are in the wrappers directory.

$ crontab -l
SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
HOME=/auto/home3/delacs
RAILS_ENV=development

0 7 * * * /bin/bash -l -c 'source ~/.bash_profile' && cd $HOME/Documents/projects/monweb_management && $HOME/.rvm/wrappers/ruby-2.0.0-p353@RailsDev/rake perfdb:get_baselines >> $HOME/logs/db.import.log 2>&1

5 7 * * * /bin/bash -l -c 'source ~/.bash_profile' && cd $HOME/Documents/projects/monweb_management && $HOME/.rvm/wrappers/ruby-2.0.0-p353@RailsDev/rake perfdb:get_published_runs  >> $HOME/logs/db.import.log 2>&1

Backup Dir and Files in Linux Using Tar and Bash

1. Create a bash script

$ vi backup.sh

#!/bin/bash
# This is a script the creates a backup of
# monitor instances: .../monitor/inst => .../monitor/backup

DATE=`date +"%Y%m%d"`
TIMESTAMP=`date +"%Y/%m/%d %T"`
FILENAME="inst_backup_$DATE.tar.gz"
SRCDIR="inst"
DESDIR="backup"

tar -cpzf $DESDIR/$FILENAME $SRCDIR

if [ $? -eq 0 ]; then
    echo "$TIMESTAMP: Backup success: $FILENAME"
else
    echo "$TIMESTAMP: Backup error: $?"
fi

# Any backup older than 30 days are deleted
find ./$DESDIR -type f -mtime +30 -delete -printf "$TIMESTAMP: Deleted %16f\n"

for tar:
c - create
p - preserve file and dir permission
z - compress file
f - target filename

2. Schedule with cron

$ crontab -e
0 5 * * * cd $HOME/scheduler/monitor && ./backup.sh >> $HOME/scheduler/monitor/backup/logs/monitor.backup.log 2>&1

This would schedule a backup at 5am everyday

Create Dashboard App Using Dashing Framework

This dashboard framework is fantastic -> Dashing.

Here's how to create a dashboard very easily...

$ gem install dashing
$ dashing new sweet_dashboard_project
$ cd sweet_dashboard_projec
$ bundle install
$ dashing start

Let's create our own dashboard

$ dashing generate dashboard monweb
       exist  dashboards
      create  dashboards/monweb.erb

Create our monitor widget

$ dashing generate widget monitor
       exist  widgets
      create  widgets/monitor/monitor.coffee
      create  widgets/monitor/monitor.html
      create  widgets/monitor/monitor.scss

My .vimrc

This is the .vimrc I'm using now. I got from here. Stick this on your home directory.

set nocompatible "This fixes the problem where arrow keys do not function properly on some systems.
syntax on  "Enables syntax highlighting for programming languages
"set mouse=a  "Allows you to click around the text editor with your mouse to move the cursor
set showmatch "Highlights matching brackets in programming languages
set autoindent  "If you're indented, new lines will also be indented
set cindent  "Automatically indents lines after opening a bracket in programming languages
set smartindent
set backspace=2  "This makes the backspace key function like it does in other programs.
set tabstop=8  "How much space Vim gives to a tab
set number  "Enables line numbering
set smarttab  "Improves tabbing
set expandtab  "Expand tabs into spaces"
set shiftwidth=4  "Assists code formatting
colorscheme delek  "Changes the color scheme. Change this to your liking. Lookin /usr/share/vim/vim61/colors/ for options.
"setlocal spell  "Enables spell checking (CURRENTLY DISABLED because it's kinda annoying). Make sure to uncomment the next line if you use this.
"set spellfile=~/.vimwords.add  "The location of the spellcheck dictionary. Uncomment this line if you uncomment the previous line.
"set foldmethod=manual  "Lets you hide sections of code
"--- The following commands make the navigation keys work like standard editors
imap <silent> <Down> <C-o>gj
imap <silent> <Up> <C-o>gk
nmap <silent> <Down> gj
nmap <silent> <Up> gk
"--- Ends navigation commands
"--- The following adds a sweet menu, press F4 to use it.
source $VIMRUNTIME/menu.vim
set wildmenu
set cpo-=<
set wcm=<C-Z>
map <F4> :emenu <C-Z>
"--- End sweet menu
"show current filename
set modeline
set ls=2
" Searches in bold yellow
hi Search ctermfg=Yellow ctermbg=NONE cterm=bold
" make tab in v mode indent code
vmap <tab> >gv
vmap <s-tab> <gv
" make tab in normal mode indent code
nmap <tab> I<tab><esc>
nmap <s-tab> ^i<bs><esc>
" paste mode - this will avoid unexpected effects when you
" cut or copy some text from one window and paste it in Vim.
set pastetoggle=<F11>
" comment/uncomment blocks of code (in vmode)
vmap _c :s/^/#/gi<Enter>
vmap _C :s/^#//gi<Enter>
" Tidy selected lines (or entire file) with _t:
nnoremap <silent> _t :%!perltidy -q<Enter>
vnoremap <silent> _t :!perltidy -q<Enter>
" Deparse obfuscated code
nnoremap <silent> _d :.!perl -MO=Deparse 2>/dev/null<cr>
vnoremap <silent> _d :!perl -MO=Deparse 2>/dev/null<cr>

Brocade Switch Cheat Sheet

For further reading: Zoning Brocade switches - Tutorial

1. Show zoning configuration

> zoneshow
> zoneshow *zonename*

2. Show overall configuration of switch

> switchshow

How to make Rails Turbolinks play nicely with jQuery

On Rails 4, AJAX in my pages are not being called because of turbolinks. The solution is to wrap the javascript code around the page load event. Got this solution from this post.

What works for me is this…

var ready = function() {
  ...your javascript goes here...
};

$(document).ready(ready);
$(document).on('page:load', ready);