Study notes of the file management system

Document Management System Study Notes 1. file system structure (directory structure)/usr/bin: stores commands executed by the user/usr/sbin: stores commands that can only be executed by the root user/home: user's default directory/proc: virtual file system, which stores the memory image and does not exist in the hard disk... document Management System Study Notes 1. file system structure (directory structure)/usr/bin: stores commands executed by the user/usr/sbin: stores commands that can only be executed by the root user/home: user's default directory/proc: virtual file system, which stores memory images. the hard disk does not contain/dev: stores device files/lib: stores the shared library files required by the system/lost + found: save some system error check results/tmp: store the user's temporary directory/etc: System configuration file/var: Contains frequently changed files, emails, log files or something/usr: store all commands, libraries, manuals, etc. (such as the c: \ windo directory)/mnt: installation point of the temporary file system (Mount directory)/boot: kernel file and startup file # du-sh/| sort-nr | head to view the root directory file size # fsck e2fsck file system repair (available in single user mode) # fsck-y the partition name can be automatically repaired (-y agrees to fix) # fiel filename to see what file type is 2. mounting the optical drive to the device # mount/dev/cdrom/mnt/cdrom (/mnt/crdom directory to be created by yourself) unmount the optical drive # unmount/mnt/cdrom # eject3. partition and formatting principles partition the disk partition (fdisk) create a file system (mkfs format) write the configuration file (/etc/fstab) partition steps: # fdisk/dev/sdb # m help # p print partition table # n add new partition format partition: # mkfs. ext3/dev/sdb1 (based on your actual situation) # mkdir ccccc # mount/dev/sdb1 cccc (you can mount the disk) # vim/etc/fstab) # e2label/dev/sda3 check whether this partition has a volume label # e2label/dev/sda3 data writes this partition as this volume label 4. disk quota