= 2018-03-30 =

== Liquibase vs Flyway ==

* 面對不同版本之間的 Database Schema 異動，需要一些管理工具，目前聽到兩套，一套是 Liquibase 另一套是 Flyway
* 先來看一下兩套的差異比較
  * https://stackshare.io/stackups/flyway-vs-liquibase
  * https://reflectoring.io/database-refactoring-flyway-vs-liquibase/ (Updated: 2017-05-14)
{{{
both are mainly maintained by a single person and not by a large team.
}}}

== Mac OS ==

* cron job 寫法還是跟 linux 一樣
{{{
~$ crontab -l
0 14 * * * osascript -e 'display notification "checking traffic routes" with title "Check Google Maps"'
0 18 * * * osascript -e 'display notification "checking traffic routes" with title "Check Google Maps"'
}}}

* Mac OS 的 `notify-send` 指令有點不一樣，要靠 `osascript` 執行 `AppleScript`
{{{
OSASCRIPT(1)              BSD General Commands Manual             OSASCRIPT(1)

NAME
     osascript -- execute OSA scripts (AppleScript, JavaScript, etc.)

SYNOPSIS
     osascript [-l language] [-i] [-s flags] [-e statement | programfile] [argument ...]
}}}