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Linux Torvalds
How to pronounce this name is quite curious, searched it, and someone even made a collection, oh ...
ULIMIT
[todo]
Systemd
The first process of the system, with a process ID of 1. ps -p 1 PID TTY TIME CMD 1 ?...
Pipe
Basic Concepts A pipe can use the output of one command as the input of the next command, repres...
LSOF
[todo]
File Descriptor
Basic Concepts A file descriptor (FD) is an integer identifier used to represent an open file or...
User Managerment
Account /etc/passwd Linux uses the /etc/passwd file to store user account information. Because m...
Group Management
Relationship Primary Group When a user is created, a group with the same name is also created, w...
File Permission
Composition Structure -rwxr-xr-- The first character indicates the file type: -：File, such as ...
Acess Control List
Access Control List (ACL) is a more flexible and fine-grained permission management mechanism, us...