dwim 0.3.1

启动第一个程序

如果您想从简单的示例开始，可以尝试以下操作

launch_program('pidgin')

当您创建了上面的配置脚本并运行dwim程序时，它将在第一次运行时启动Pidgin聊天客户端。在下次运行时，将不会发生任何操作，因为Pidgin已经在运行了。

修改“正在运行”检查

默认的“正在运行”检查如下所示

# Replace `pidgin' with any program name.
pidof $(which pidgin)

这种逻辑可能不适用于所有程序。例如，在我的配置文件中，我使用包装脚本启动Dropbox客户端。一旦Dropbox客户端启动，包装脚本就会终止，因此pidof检查失败。解决方案是自定义“正在运行”检查

launch_program('dropbox start', is_running='pgrep -f "$HOME/.dropbox-dist/*/dropbox"')

上面的例子是为Dropbox客户端设计的，但相同的原理也可以应用于所有其他程序。唯一的技巧是找到一个可以正确判断程序是否正在运行的shell命令。不幸的是，这部分不能以完全通用的方式自动化。下面的高级配置示例包含更多定义自定义 pidof 检查和 pgrep -f 检查的例子。

启用位置感知

启用位置感知的第一步是将以下行添加到您的配置文件中

determine_network_location()

即使您没有向此函数传递任何信息，它也会报告您当前网关的MAC地址。这让我不必记录执行相同操作所需的shell命令 :-). 运行 dwim 命令，并注意类似以下的一行

We're not connected to a known network (unknown gateway MAC address 84:9c:a6:76:23:8e).

现在编辑您的配置文件，并更改您刚才添加的行

location = determine_network_location(home=['84:9c:a6:76:23:8e'])

现在重新运行 dwim，它将说

We're connected to the home network.

我们刚才做了什么？我们记下了当前网关的MAC地址，并将该MAC地址与名为“home”的位置关联起来。现在，在我们的配置文件中，我们可以根据我们是否连接到家庭网络来启动程序

if location == 'home':
   # Client for Music Player Daemon.
   launch_program('ario --minimized')
else:
   # Standalone music player.
   launch_program('rhythmbox')

下面的高级配置示例（我的配置文件）包含了一个结合多个网络和具有多个网关的网络的高级示例。

示例配置文件

我已经使用了 dwim（之前以Bash脚本的形式存在）多年的变体，所以我的配置文件已经增长了很多。因此，它可能提供了您可以做的有趣事物的例子

# vim: fileencoding=utf-8

# ~/.dwimrc: Profile for dwim, my location aware application launcher.
# For more information please see https://github.com/xolox/python-dwim/.

# Standard library modules.
import os
import time

# Packages provided by dwim and its dependencies.
from executor import execute
from dwim import (determine_network_location, launch_program, LaunchStatus
                  set_random_background, wait_for_internet_connection)

# This is required for graphical Vim and gnome-terminal to have nicely
# anti-aliased fonts. See http://awesome.naquadah.org/wiki/Autostart.
if launch_program('gnome-settings-daemon') == LaunchStatus.started:

    # When my window manager is initially started I need to wait for a moment
    # before launching user programs because otherwise strange things can
    # happen, for example programs that place an icon in the notification area
    # might be started in the background without adding the icon, so there's
    # no way to access the program but `dwim' will never restart the program
    # because it's already running! ಠ_ಠ
    logger.debug("Sleeping for 10 seconds to give Awesome a moment to initialize ..")
    time.sleep(10)

# Determine the physical location of this computer by matching the MAC address
# of the gateway against a set of known MAC addresses. In my own copy I've
# documented which MAC addresses belong to which devices, but that doesn't seem
# very relevant for the outside world :-)
location = determine_network_location(home=['84:9C:A6:76:23:8E'],
                                      office=['00:15:C5:5F:92:79',
                                              'B6:25:B2:19:28:61',
                                              '00:18:8B:F8:AF:33'])

# Correctly configure my multi-monitor setup based on physical location.
if location == 'home':
    # At home I use a 24" ASUS monitor as my primary screen.
    # My MacBook Air sits to the left as the secondary screen.
    execute('xrandr --output eDP1 --auto --noprimary')
    execute('xrandr --output HDMI1 --auto --primary')
    execute('xrandr --output HDMI1 --right-of eDP1')
if location == 'work':
    # At work I use a 24" LG monitor as my primary screen.
    # My Asus Zenbook sits to the right as the secondary screen.
    execute('xrandr --output eDP1 --auto')
    execute('xrandr --output HDMI1 --auto')
    execute('xrandr --output HDMI1 --left-of eDP1')

# Set a random desktop background from my collection of wallpapers. I use the
# program `feh' for this because it supports my desktop environment / window
# manager (Awesome). You can install `feh' using `sudo apt-get install feh'.
set_random_background(command='feh --bg-scale {image}',
                      directory=os.path.expanduser('~/Pictures/Backgrounds'))

# Start my favorite programs.
launch_program('gvim')
launch_program('nm-applet')
launch_program('keepassx $HOME/Documents/Passwords/Personal.kdb -min -lock',
               is_running='pgrep -f "keepassx $HOME/Documents/Passwords/Personal.kdb"')
# I actually use three encrypted key passes, two of them for work. I omitted
# those here, but their existence explains the complex is_running command.
launch_program('fluxgui', is_running='pgrep -f $(which fluxgui)')

# The remaining programs require an active internet connection.
wait_for_internet_connection()

launch_program('chromium-browser', is_running='pidof /usr/lib/chromium-browser/chromium-browser')
launch_program('pidgin')
if location == 'home':
    # Mozilla Thunderbird is only useful at home (at work IMAPS port 993 is blocked).
    launch_program('thunderbird', is_running='pidof /usr/lib/thunderbird/thunderbird')
launch_program('dropbox start', is_running='pgrep -f "$HOME/.dropbox-dist/*/dropbox"')
launch_program('spotify')