Tree-l 1/View root directory
View Sub-disc ls/dev/sda*
Application/usr/bin
Data files to help/usr/share
Configuration File/etc/
Startup file/etc/init.d
Summary
1) All Linux directory bodies are a hierarchical, upside-down, tree-shaped directory structure
2) Root "/" is the vertex of all directories, ancestors.
3) There is no relationship between the directory structure and the partition device.
4) All catalogs are organized and named according to certain categories
5) Uname Printing System Information
Cat/dev/null >/bigman/a.txt How to empty a file
/Boot Store Program
/dev Device Directory
/etc configuration file and startup directory
Home directory for normal users
/proc display kernel and process information virtual file system
Cat/proc/meminfo Viewing memory information
Cat/proc/cpuinfo View CPU Image
Directories for/bin and/sbin/and Usr/sbin management commands
/tmp Temp file directory
/var directory, typically a directory of log files
/usr user programs, data, help files, etc.
Cat/var/log/messages Checking system logs
Cat/var/log/secure Check System login security log
(2) directory structure of Linux system
