Linux Commands: How to view partition sizes

Linux Commands: How to view partition sizes

sudo lsblk -o NAME,FSTYPE,SIZE,MOUNTPOINT,LABEL
or
lsblk -f

sudo lsblk -o NAME,FSTYPE,SIZE,MOUNTPOINT,LABEL

NAME    FSTYPE              SIZE MOUNTPOINT LABEL

sda                       447.1G            

├─sda1  linux_raid_member  19.5G            

│ └─md1 ext4               19.5G /          /

├─sda2  linux_raid_member 427.1G            

│ └─md2 ext4              427.1G /home      /home

└─sda3  swap                511M [SWAP]     swap-sda3

sdb                       447.1G            

├─sdb1  linux_raid_member  19.5G            

│ └─md1 ext4               19.5G /          /

├─sdb2  linux_raid_member 427.1G            

│ └─md2 ext4              427.1G /home      /home

└─sdb3  swap                511M [SWAP]     swap-sdb3




and 




List drives system can see

fdisk -l

Disk /dev/sda: 480.1 GB, 480103981056 bytes

255 heads, 63 sectors/track, 58369 cylinders, total 937703088 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 4096 bytes

I/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk identifier: 0xc73d95be

   Device Boot      Start         End      Blocks   Id  System

/dev/sda1   *        4096    40962047    20478976   fd  Linux RAID autodetect

/dev/sda2        40962048   936648703   447843328   fd  Linux RAID autodetect

/dev/sda3       936648704   937695231      523264   82  Linux swap / Solaris

Disk /dev/sdb: 480.1 GB, 480103981056 bytes

255 heads, 63 sectors/track, 58369 cylinders, total 937703088 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 4096 bytes

I/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk identifier: 0xce6e28eb

   Device Boot      Start         End      Blocks   Id  System

/dev/sdb1   *        4096    40962047    20478976   fd  Linux RAID autodetect

/dev/sdb2        40962048   936648703   447843328   fd  Linux RAID autodetect

/dev/sdb3       936648704   937695231      523264   82  Linux swap / Solaris

Disk /dev/md2: 458.6 GB, 458591502336 bytes

2 heads, 4 sectors/track, 111960816 cylinders, total 895686528 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 4096 bytes

I/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk identifier: 0x00000000

Disk /dev/md2 doesn't contain a valid partition table

Disk /dev/md1: 21.0 GB, 20970405888 bytes

2 heads, 4 sectors/track, 5119728 cylinders, total 40957824 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 4096 bytes

I/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk identifier: 0x00000000



Linux command to view Disk Usage
use  du (disk usage) or df (disk free) 
enter specific folder
-h display humain readable format
-a display disk usage size of all all files and folders
-c display total size at the bottom of the list
-time to display modification date


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