想要點一下就跳出圖形化月曆 (calendar) 之功能，方法：
- 安裝 gsimplecal 並至 IceWM 設定檔進行設定。
##ReadMore##
Step1.
Debian/Jessie 直接 APT 進行安裝：
apt-get -y install gsimplecal
Step2.
寫設定檔(可以使用 man gsimplecal 查看詳細設定)：
vim ~/.config/gsimplecal/config
show_calendar = 1 show_timezones = 1 mark_today = 1 show_week_numbers = 0 close_on_unfocus = 0 external_viewer = sunbird -showdate "%Y-%m-%d" clock_format = %Y/%m/%d (%a) %T force_lang = en_US.utf8 mainwindow_decorated = 1 mainwindow_keep_above = 1 mainwindow_sticky = 0 mainwindow_skip_taskbar = 1 mainwindow_resizable = 1 mainwindow_position = mouse mainwindow_xoffset = 0 mainwindow_yoffset = 0 clock_label = Taipei clock_tz = :Asia/Taipei
Step3.
設定 IceWM 之設定檔：
sudo vim /etc/X11/icewm/preferences
# Command to run on clock ClockCommand="gsimplecal"
Step4.
完成→測試。
鍵盤操作快捷鍵：
- Escape, Ctrl+w, Ctrl+q → Close the window.
- j → Switch to the next month.
- k → Switch to the previous month.
- J → Jump one year forward.
- K → Jump one year backward.
- g, Home → Jump to the current date.
---
Reference:
http://dmedvinsky.github.io/gsimplecal/
