Dedetok: My Experience Notes

My Experience Notes These pages contain my experiences using technology. All of the works are working properly at the time when they wrote. You may use them for any purposes.

Sunday, March 1, 2026

Debian 13: upgrading bios

Is it possible to upgrade bios from Debian, since the most manufacture only provide bios upgrade under windows environment? In the past it i...

Thursday, February 26, 2026

Android java: using sqliteopenhelper pattern code

Using additional Room may increase size of application, means more lines required to executed. implement SQLiteOpenHelper rather then using ...

Monday, February 23, 2026

Android java: boot on boot receiver

This is a table on all android boot where on receive event trigger your application: State Security Status getMySharedPre...

Android java: Work Manager and Alarm Manager

Java Android Scheduling: Work Manager and Alarm Manager WorkManager: Constraints: You can specify conditions like "only run when charg...

Debian 13: debsecan to check vunerablities

This is MUST know for server admin. Debin profide debsecan to analyzes the list of installed packages on the current host and reports vulner...

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