Mount（linuxmount介绍）

mount

[语法]:mount[-r] [device] [dir]

[说明]:将设备安装到目录下

-r 以只读方式安装

-t 指定设备的文件系统类型

常见的文件系统类型有：

ext2 linux目前常用的文件系统

msdos MS-DOS的fat，就是fat16

vfat Windows98常用的fat32

nfs 网络文件系统

iso9660 CD-ROM光盘标准文件系统

ntfs Windows NT/2000/XP的文件系统

auto 自动检测系统

1.-t vfstype 指定文件系统的类型，通常不必指定，mount 会自动选择正确的类型:

光盘或光盘镜像：iso9660

DOS fat16文件系统：msdos

Windows 9x fat32文件系统：vfat

Windows NT ntfs文件系统：ntfs

Mount Windows文件网络共享：smbfs

UNIX(LINUX) 文件网络共享：nfs

2.-o options 主要用来描述设备或档案的挂接方式。

loop：用来把一个文件当成硬盘分区挂接上系统

ro：采用只读方式挂接设备

rw：采用读写方式挂接设备

iocharset：指定访问文件系统所用字符集

3.device 要挂接(mount)的设备。

4.dir设备在系统上的挂接点(mount point)。

查看信息，挂载U盘

[root@localhost ~]# more /proc/partitionsmajor minor #blocks name8 0 20971520 sda8 1 307200 sda18 2 2097152 sda28 3 18566144 sda37 0 104857600 loop07 1 2097152 loop1253 0 104857600 dm-08 16 15729664 sdb8 17 14984192 sdb1

[root@localhost ~]# fdisk -lDisk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk label type: dosDisk identifier: 0x000c5f28Device Boot Start End Blocks Id System/dev/sda1 * 2048 616447 307200 83 Linux/dev/sda2 616448 4810751 2097152 82 Linux swap / Solaris/dev/sda3 4810752 41943039 18566144 83 LinuxDisk /dev/loop0: 107.4 GB, 107374182400 bytes, 209715200 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk /dev/loop1: 2147 MB, 2147483648 bytes, 4194304 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk /dev/mapper/docker-8:3-1136616-pool: 107.4 GB, 107374182400 bytes, 209715200 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 65536 bytes / 65536 bytesDisk /dev/sdb: 16.1 GB, 16107175936 bytes, 31459328 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk label type: dosDisk identifier: 0x00000000Device Boot Start End Blocks Id System/dev/sdb1 * 1490944 31459327 14984192 7 HPFS/NTFS/exFAT

#/dev/sdb1即为外插U盘设备

#装载U盘

mount /dev/sdb1 ./mnt_usbmount -t ntfs-3g /dev/sdb1 ./mnt_usb

[root@localhost ~]# df -HFilesystem Size Used Avail Use% Mounted on/dev/sda3 20G 17G 3.0G 85% /devtmpfs 495M 0 495M 0% /devtmpfs 511M 35M 477M 7% /runtmpfs 511M 0 511M 0% /sys/fs/cgrouptmpfs 103M 50k 103M 1% /run/user/1002

[root@localhost ~]# mountsysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)devtmpfs on /dev type devtmpfs (rw,nosuid,size=482584k,nr_inodes=120646,mode=755)devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)tmpfs on /run type tmpfs (rw,nosuid,nodev,mode=755)tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd)cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)/dev/sda3 on / type xfs (rw,relatime,attr2,inode64,noquota)sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime)tmpfs on /run/user/1002 type tmpfs (rw,nosuid,nodev,relatime,size=99796k,mode=700,uid=1002,gid=1002)

umount

[语法]:umount 设备

[说明]:将已安装的文件系统卸下

[root@localhost ~]# umount /dev/sdb1

2022-9-21