file locked with only readers

Linux supports a wide variety of file systems. They provide a good operation and user interface for data storage and management. In a file system, security mechanisms and problems such as file/directory access permission management and control, and

1. System file read/writeTask Description:Write the program, read the Linux system file "/etc/passwd" content, and output to the screen. In the program directory, create a new file passwd and copy the contents of the "/etc/passwd" System file to the

In this section, we describe the lock-related APIs provided in the go language. This includes mutexes and read-write locks. We described the mutex in the 6th chapter, but did not mention the read-write lock. Both of these locks are very common and

Mysql> show InnoDB status\g;1. Row ***************************Type:innodbName:Status:=====================================140423 4:15:38 INNODB MONITOR OUTPUT=====================================Per second averages calculated to the last seconds The

This article introduces a so-called "patron saint of Linux file Systems", which is a program module that can observe the changes in the Linux file system in real time. It is very interesting and important to be able to observe the changes of the

This article introduces a so-called "patron saint of Linux File System", which refers to a program module that can observe the changes of Linux File System in real time. Being able to observe changes in the file system in real time and make

Objective In order to ensure consistent integrity of data, there is a locking mechanism in any database. The quality of locking mechanism should be directly thought of the concurrent processing ability and performance of a database system, so the

CVS is a C/S system. Multiple developers use a central version control system to record file versions to ensure file synchronization. The working mode is as follows: CVS server (file version Library)/| \(Same step for Version)/| \Developer 1

#一. OverviewThe > database locking mechanism simply means that the database is designed to ensure the consistency of the data and to make the various shared resources be ordered by concurrent access. For any kind of database need to have a

1 Introduction In relational databases (Db2,oracle,sybase,informix and SQL Server) the smallest recovery and transaction units are one transaction (transactions), and transactions have acid (atomicity, consistency, isolation, and permanence)