1、df - report file system disk space usage
df displays the amount of disk space available on the file system containing each file name argument. If no file name is given, the space available on all currently mounted file systems is shown. Disk space is shown in 1K blocks by default.
</tmp/takchi>$df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup-lv_root 9.9G 3.6G 5.9G 38% / tmpfs 32G 0 32G 0% /dev/shm /dev/sda1 1008M 60M 897M 7% /boot /dev/mapper/VolGroup-lv_home 5.0G 2.3G 2.5G 48% /home /dev/mapper/VolGroup-lv_opt 60G 49G 7.8G 87% /opt /dev/mapper/VolGroup-lv_srv_BigData 9.9G 2.4G 7.0G 26% /srv/BigData /dev/mapper/VolGroup-lv_tmp 5.0G 168M 4.6G 4% /tmp /dev/mapper/VolGroup-lv_var 9.9G 2.7G 6.7G 29% /var /dev/mapper/VolGroup-lv_var_crash 9.9G 8.1G 1.3G 87% /var/crash /dev/mapper/VolGroup-lv_var_log 30G 4.1G 24G 15% /var/log /dev/sdb1 591G 366G 225G 62% /srv/BigData/hadoop/data1
2、du - estimate file space usage
Summarize disk usage of each FILE, recursively for directories.
</tmp/takchi>$du -ah 8.0K ./gray_20170213000000.txt 16K ./hello 4.0K ./hello.cpp 28K ./world 4.0K ./world.cpp 64K .
3、fdisk - Partition table manipulator for Linux
Hard disks can be divided into one or more logical disks called partitions. This division is described in the partition table found
in sector 0 of the disk.