Linux file system

1. File System composition

/usr/bin,/bin--holds commands that all users can execute

/usr/sbin,/sbin--store commands that only root can execute

/home-User default host Directory

/proc--Virtual file system, storing current memory image

/dev--store device files

/lib--The shared library required for the system program to run

/lost+found--to store some system error check results

/ tmp-store temporary files sticky bit t, each user has write permission, but only the owning user has delete permission

/etc--System configuration file

/var-contains frequently changing files, such as mail, log files, scheduled tasks, etc.

/usr-stores all commands, libraries, manual pages, etc. similar to the C:\Windows directory

/MNT--Installation point of the temporary file system

/boot--kernel file and bootstrap file save location

/usr/local--third-party software installation location similar to C:\Program Files

2, File system common commands

DF Df–h or df–m----View partition usage

Mounted on----mount point

FileSystem--Specific hardware device name

View file, directory size: du

Du–h--View File size

Du–sh----View Directory size

FSCK, E2FSCK---Detect and Repair file system (single-user mode after uninstalling file system execution)

FILE----Determine the filename type

3. Device Mount

Mount Optical Drive

• Mkdir/mnt/cdrom---Create temporary mount points, any directory is OK
• Mount/dev/cdrom/mnt/cdrom--To Mount
• Umount/mnt/cdrom---Uninstalling the optical drive tip: The device is busy and cannot be uninstalled in the Mount directory
• Eject---unmount the optical drive

4. Partitioning and formatting principles

FDISK/DEV/SDB----Set the partition of the SDB hard disk

M--Help

P--Show partition table

N--Add a new partition

Trivia