Calendar

CalDAV and CardDAV 101

CalDAV and CardDAV are application layer computer network protocols that enable users to synchronize and manage their calendar (CalDAV) and contact (CardDAV) data across multiple devices and platforms. These open standards protocols leverage the (World Wide Web Distributed Authoring and Versioning) protocol, which provides a framework for users to create, change, and move documents on…

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Synchronizing Thunderbird Calendar with Apple iCloud Calendar

Thunderbird is a nice email client and calendar management software. iCloud calendar is the native calendar cloud service in Apple devices such as iPhone. So far there is no native support from Thunderbird to support iCloud calendar, excepting reading the read-only public iCloud calendars which has privacy concerns as long as lacks of editing functionalities….

Synchronizing Thunderbird Calendar and Address Book with Office365 Exchange Online using ActiveSync

Thunderbird is a nice email client available on Linux and Windows. With the Lightning plugin, Thunderbird can support calendar functions well. Exchange is a widely used email and calendar/address book service software. Office 365 provide the cloud version of Exchange named Office 365 Exchange Online. Although Exchange Online provide IMAP for synchronizing emails, it provides…

Getting Epoch Timestamp in C

In C, how to get the epoch timestamp, the number of seconds passed since the epoch? In C, from man 7 time: UNIX systems represent time in seconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC). A program can determine the calendar time using gettimeofday(2), which returns time (in seconds and microseconds) that have elapsed since…

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Where Does Evolution Save Its Data and Configuration Files on Linux?

Evolution is a great personal information management tool that provides Email, address book and calendar tools. Evolution provides many enterprise friendly feature such as native support to Microsoft Exchange connectivity for Emails, address books and calendars. Evolution uses various ways including plain files and dconf configuration systems. This post will give an introduction to the…