Search Results

Basic Concepts A file descriptor (FD) is an integer identifier used to represent an open file or other input/output resources in an operating system. It serves as a bridge between the operating system and applications for file operations. In Linux, a file des...

[todo]

Basic Concepts A pipe can use the output of one command as the input of the next command, represented by the symbol | in the command-line environment, which is a form of one-way communication between processes, implemented based on file descriptors. Working ...

The first process of the system, with a process ID of 1. ps -p 1 PID TTY TIME CMD 1 ? 00:00:04 systemd However, when we want to display detailed information, the result will be different. ps -p 1 -f UID PID PPID C STIME TTY TIME CMD r...

[todo]