gnome-shell 使用 notify-send 发送桌面消息

什么是notify-send?

     notify-send - a program to send desktop notifications

怎么使用？

NAME

notify-send - a program to send desktop notifications

SYNOPSIS

notify-send [OPTIONS] <summary> [body]

DESCRIPTION

With notify-send you can sends desktop notifications to the user via a notification daemon
from the command line.
These notifications can be used to inform the user about an
event
or display some form of information without getting in the user's way.

OPTIONS

-u, --urgency=LEVEL Specifies the urgency level (low, normal, critical).
-t, --expire-time=TIME
The duration, in milliseconds, for the notification to appear on screen.
(Ubuntu's
Notify OSD and GNOME Shell both ignore this parameter.)
-i, --icon=ICON[,ICON...]
Specifies an icon filename or stock icon to display.
-c, --category=TYPE[,TYPE...]
Specifies the notification category.
Help options:
-?, --help
Show this help message
-h, --hint=TYPE:NAME:VALUE
Specifies basic extra data to pass. Valid types are int, double, string and byte.
SEE ALSO
The Desktop Notification Spec on http://www.galago-project.org/specs/notification/.

AUTHOR

This manual page was written by Andre Filipe de Assuncao e
Brito
<decko@noisemakers.org>
and
Paul
van Tilburg <paulvt@debian.org> and Riccardo Setti <giskard@debian.org> for the
Debian project (but may be used by others).
在 gnome-shell 中 使用 notify-send --help 命令来进行显示使用说明：

➜
Downloads notify-send --help
Usage:
notify-send [OPTION?] <SUMMARY> [BODY] - create a notification
Help Options:
-?, --help
Show help options
Application Options:
-u, --urgency=LEVEL
Specifies the urgency level (low, normal, critical).
-t, --expire-time=TIME
Specifies the timeout in milliseconds at which to expire the notification.
-a, --app-name=APP_NAME
Specifies the app name for the icon
-i, --icon=ICON[,ICON...]
Specifies an icon filename or stock icon to display.
-c, --category=TYPE[,TYPE...]
Specifies the notification category.
-h, --hint=TYPE:NAME:VALUE
Specifies basic extra data to pass. Valid types are int, double, string and byte.
-v, --version
Version of the package.

　　之后我们将结合crontab等命令, 来进行定时发送消息，进行桌面和邮件通知。