linux disk command

1 mounted disk information

there are three files to record the mounted disk information

a、/etc/fstab

$cat /etc/fstab

# /etc/fstab: static file systeminformation.

#

# Use 'blkid'to print the universally unique identifier for a

# device; this may be used with UUID= as amore robust way to name devices

# that works even if disks are added andremoved. See fstab(5).

#

# <file system> <mountpoint> <type> <options> <dump> <pass>

proc /proc proc nodev,noexec,nosuid 0 0

# / was on /dev/sda1 during installation

UUID=1e1a19ac-59bc-4ff9-a503-e6cf2cf3797d/ ext4 errors=remount-ro 0 1

# swap was on /dev/sda5 during installation

UUID=8d4dae04-12e7-498f-a7d7-54a4cf460ddbnone swap sw 0 0

/dev/scd0 /media/floppy0 auto rw,user,noauto,exec,utf8 0 0

b、/etc/mtab

$cat /etc/mtab

/dev/sda1 / ext4rw,errors=remount-ro,commit=0 0 0

proc /proc proc rw,noexec,nosuid,nodev 0 0

sysfs /sys sysfs rw,noexec,nosuid,nodev 0 0

fusectl /sys/fs/fuse/connections fusectl rw0 0

none /sys/kernel/debug debugfs rw 0 0

none /sys/kernel/security securityfs rw 0 0

udev /dev devtmpfs rw,mode=0755 0 0

devpts /dev/pts devptsrw,noexec,nosuid,gid=5,mode=0620 0 0

tmpfs /run tmpfsrw,noexec,nosuid,size=10%,mode=0755 0 0

none /run/lock tmpfsrw,noexec,nosuid,nodev,size=5242880 0 0

none /run/shm tmpfs rw,nosuid,nodev 0 0

binfmt_misc /proc/sys/fs/binfmt_miscbinfmt_misc rw,noexec,nosuid,nodev 0 0

gvfs-fuse-daemon /home/oma/.gvfsfuse.gvfs-fuse-daemon rw,nosuid,nodev,user=oma 0 0

c 、/proc/mounts

rootfs / rootfs rw 0 0

sysfs /sys sysfsrw,nosuid,nodev,noexec,relatime 0 0

proc /proc procrw,nosuid,nodev,noexec,relatime 0 0

udev /dev devtmpfsrw,relatime,size=1931844k,nr_inodes=482961,mode=755 0 0

devpts /dev/pts devptsrw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0

tmpfs /run tmpfsrw,nosuid,relatime,size=775904k,mode=755 0 0

fusectl /sys/fs/fuse/connections fusectlrw,relatime 0 0

/dev/disk/by-uuid/1e1a19ac-59bc-4ff9-a503-e6cf2cf3797d/ ext4 rw,relatime,errors=remount-ro,user_xattr,acl,barrier=1,data=ordered 0 0

none /sys/kernel/debug debugfs rw,relatime0 0

none /sys/kernel/security securityfsrw,relatime 0 0

none /run/lock tmpfsrw,nosuid,nodev,noexec,relatime,size=5120k 0 0

none /run/shm tmpfsrw,nosuid,nodev,relatime 0 0

binfmt_misc /proc/sys/fs/binfmt_miscbinfmt_misc rw,nosuid,nodev,noexec,relatime 0 0

gvfs-fuse-daemon /home/oma/.gvfsfuse.gvfs-fuse-daemon rw,nosuid,nodev,relatime,user_id=1000,group_id=1000 0 0

2 check the uuid of the device

$ blkid

/dev/sda1: UUID="1e1a19ac-59bc-4ff9-a503-e6cf2cf3797d" TYPE="ext4"

/dev/sda5: UUID="8d4dae04-12e7-498f-a7d7-54a4cf460ddb" TYPE="swap"

$ sudo blkid /dev/sdb

/dev/sdb: UUID="739bf91b-2f6d-44e6-bdad-bc88e33006a3" TYPE="ext4"