| // GetFreePort asks the kernel for a free open port that is ready to use. | |
| func GetFreePort() (port int, err error) { | |
| var a *net.TCPAddr | |
| if a, err = net.ResolveTCPAddr("tcp", "localhost:0"); err == nil { | |
| var l *net.TCPListener | |
| if l, err = net.ListenTCP("tcp", a); err == nil { | |
| defer l.Close() | |
| return l.Addr().(*net.TCPAddr).Port, nil | |
| } | |
| } |
A DMG Installer is convenient way to provide end-users a simple way to install an application bundle. They are basically a folder with a shortcut to the Applications directory but they can be customized with icons, backgrounds, and layout properties. A DMG file (.dmg) is a Mac OS X Disk Image file and it is used to package files or folders providing compression, encryption, and read-only to the package.
##Creating the DMG file #Disk Utility
I have a video file on my local disk. I also have some subtitles (in HTML5's [WebVTT][] format).
I want to create an HTML file to play that video with subtitles, all from the local filesystem.
Loading an external VTT file from the local filesystem [fails due to same-origin policy][q].
| #!/bin/bash | |
| # | |
| # File: create_init_sql.sh | |
| # | |
| # Author: huxing1985@gmail.com | |
| # blog: www.colorfuldays.org | |
| # | |
| # Purpose: This script is a part of an tool to recover mysql data from .frm and .idb file. | |
| # This script is read the db data dir's file, generate an script to create the tables. | |
| # |
