Linux block device commands

Most of Linux user use df, du or fdisk, parted to check file system, block devices on a Linux system, me too.
How about trying some new staffs from the linux commands set?

1. lsblk - It is list the block devices info with friendly output,

NAME                     MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda                        8:0    0 238.5G  0 disk 
├─sda1                     8:1    0   976M  0 part /boot
├─sda2                     8:2    0  31.3G  0 part /
└─sda3                     8:3    0 206.3G  0 part /home
sdb                        8:16   0 931.5G  0 disk 
└─sdb1                     8:17   0 931.5G  0 part /data
sr0                       11:0    1  1024M  0 rom  
loop0                      7:0    0   100G  0 loop 
└─docker-8:2-266441-pool 253:0    0   100G  0 dm   
loop1                      7:1    0     2G  0 loop 
└─docker-8:2-266441-pool 253:0    0   100G  0 dm   

2. blkid - List block device attributes 

dev/sda3: LABEL="/home" UUID="c9018229-5fcb-4ac0-ad4e-8cfbfde14033" TYPE="ext4" PARTUUID="5063ffef-03"
/dev/sdb1: LABEL="/data" UUID="fa0f9a52-734d-4fdc-9413-e987dc27f0c0" TYPE="ext4" PARTUUID="2856a071-01"
/dev/loop0: UUID="0c5593b1-7766-4661-985e-619f08177f5f" TYPE="ext4"
/dev/mapper/docker-8:2-266441-pool: UUID="0c5593b1-7766-4661-985e-619f08177f5f" TYPE="ext4"
/dev/block/8:2: LABEL="/" UUID="35e7b4f9-a93c-42f8-bd18-dd62dd5d441d" TYPE="ext4" PARTUUID="5063ffef-02"
/dev/block/8:1: LABEL="/boot" UUID="611d7adc-0f11-4d5c-8f78-31e2a83f9118" TYPE="ext4" PARTUUID="5063ffef-01"

3. findmnt - Find all file system(mount points) on the system 

TARGET                                SOURCE     FSTYPE          OPTIONS
/                                     /dev/sda2  ext4            rw,relatime,data=ordered
├─/sys                                sysfs      sysfs           rw,nosuid,nodev,noexec,relatime
│ ├─/sys/kernel/security              securityfs securityfs      rw,nosuid,nodev,noexec,relatime
│ ├─/sys/fs/cgroup                    tmpfs      tmpfs           ro,nosuid,nodev,noexec,mode=755
│ │ ├─/sys/fs/cgroup/systemd          cgroup     cgroup          rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd
│ │ ├─/sys/fs/cgroup/cpu,cpuacct      cgroup     cgroup          rw,nosuid,nodev,noexec,relatime,cpu,cpuacct
│ │ ├─/sys/fs/cgroup/devices          cgroup     cgroup          rw,nosuid,nodev,noexec,relatime,devices
│ │ ├─/sys/fs/cgroup/memory           cgroup     cgroup          rw,nosuid,nodev,noexec,relatime,memory
│ │ ├─/sys/fs/cgroup/freezer          cgroup     cgroup          rw,nosuid,nodev,noexec,relatime,freezer
│ │ ├─/sys/fs/cgroup/perf_event       cgroup     cgroup          rw,nosuid,nodev,noexec,relatime,perf_event
│ │ ├─/sys/fs/cgroup/hugetlb          cgroup     cgroup          rw,nosuid,nodev,noexec,relatime,hugetlb
│ │ ├─/sys/fs/cgroup/net_cls,net_prio cgroup     cgroup          rw,nosuid,nodev,noexec,relatime,net_cls,net_prio
│ │ ├─/sys/fs/cgroup/cpuset           cgroup     cgroup          rw,nosuid,nodev,noexec,relatime,cpuset
│ │ └─/sys/fs/cgroup/blkio            cgroup     cgroup          rw,nosuid,nodev,noexec,relatime,blkio
│ ├─/sys/fs/pstore                    pstore     pstore          rw,nosuid,nodev,noexec,relatime
│ ├─/sys/kernel/debug                 debugfs    debugfs         rw,relatime
│ ├─/sys/kernel/config                configfs   configfs        rw,relatime
│ └─/sys/fs/fuse/connections          fusectl    fusectl         rw,relatime
├─/proc                               proc       proc            rw,nosuid,nodev,noexec,relatime
│ ├─/proc/sys/fs/binfmt_misc          systemd-1  autofs          rw,relatime,fd=25,pgrp=1,timeout=300,minproto=5,maxproto=5,direct
│ └─/proc/fs/nfsd                     nfsd       nfsd            rw,relatime
├─/dev                                devtmpfs   devtmpfs        rw,nosuid,size=16434044k,nr_inodes=4108511,mode=755
│ ├─/dev/shm                          tmpfs      tmpfs           rw,nosuid,nodev
│ ├─/dev/pts                          devpts     devpts          rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000
│ ├─/dev/mqueue                       mqueue     mqueue          rw,relatime
│ └─/dev/hugepages                    hugetlbfs  hugetlbfs       rw,relatime
├─/run                                tmpfs      tmpfs           rw,nosuid,nodev,mode=755
│ ├─/run/user/42                      tmpfs      tmpfs           rw,nosuid,nodev,relatime,size=3288812k,mode=700,uid=42,gid=42
│ │ └─/run/user/42/gvfs               gvfsd-fuse fuse.gvfsd-fuse rw,nosuid,nodev,relatime,user_id=42,group_id=42
│ └─/run/user/1000                    tmpfs      tmpfs           rw,nosuid,nodev,relatime,size=3288812k,mode=700,uid=1000,gid=1000
│   └─/run/user/1000/gvfs             gvfsd-fuse fuse.gvfsd-fuse rw,nosuid,nodev,relatime,user_id=1000,group_id=1000
├─/tmp                                tmpfs      tmpfs           rw
├─/boot                               /dev/sda1  ext4            rw,relatime,data=ordered
├─/home                               /dev/sda3  ext4            rw,relatime,data=ordered
├─/data                               /dev/sdb1  ext4            rw,relatime,data=ordered
└─/var/lib/nfs/rpc_pipefs             sunrpc     rpc_pipefs      rw,relatime

Just try such commands and enjoy them with your Linux life. 

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