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A summary of folder permission x and Inode in Linux Theoretical speculation I read several articles before that Linux uses the inode number to identify files, which is equivalent to the unique ID of files in the file system. Different files have different inode numbers. When a file is created, it ha ...

Location acquisition method of geolocation API global positioning system Physical location mapped by location information based on IP address Cellular telephone triangulation, according to the distance between different cellular base stations to determine the location. Wi Fi access point completes triangulat ...

Article directory I. positioning introduction Two, code 1. Instantiate LocationManager 2. Processing runtime permissions 3. Start request location 4. Positioning monitor 5. Update positioning III. Demo download I. positioning introduction You can also use Android without using the third-party map SDK Its own ...

The company's own ota upgrade apk, download upgrade package upgrade, prompt package compatibility verification failed; The errors reported by different OTA apks may be different, and the log s should be the same; 9.0 has strict authority management. avc: denied { read } for name="config.gz" dev="proc" i ...

Article directory 1, configuration 2. Installation module: 3. Reading and writing: Note 1: Note 2: 3. demo code: 4. Read all rows under all worksheets of an Excel table 5. Merge all worksheets under an Excel table (or merge multiple Excel tables ...

Git Crawling Beginning - Establishing a Remote Warehouse: The core of building a remote warehouse is to establish ssh connection between local and git server. After initializing the local warehouse through git init, we need to paste the locally gener ...

Concept: ACL is the abbreviation of Access Control List. The main purpose of ACL is to provide detailed permission settings other than the read, write and execute permissions of traditional owner, group and other. ACL can specify the permissions of r, W and X for a single user, single file or directory, which is very helpful for the use of sp ...