磁盘管理

一 df命令

df 查看磁盘分区使用状况

 

 

二 实战

[root@localhost ~]# df

Filesystem 1K-blocks Used Available Use% Mounted on

/dev/sda3 20961280 2053184 18908096 10% /

devtmpfs 494100 0 494100 0% /dev

tmpfs 508428 84 508344 1% /dev/shm

tmpfs 508428 7120 501308 2% /run

tmpfs 508428 0 508428 0% /sys/fs/cgroup

/dev/sda5 10475520 5136820 5338700 50% /usr

/dev/sda7 37214460 32932 37181528 1% /mydata

/dev/sda2 31441920 1296484 30145436 5% /var

/dev/sda1 508588 156280 352308 31% /boot

tmpfs 101688 20 101668 1% /run/user/42

tmpfs 101688 0 101688 0% /run/user/0

[root@localhost ~]# df -l

Filesystem 1K-blocks Used Available Use% Mounted on

/dev/sda3 20961280 2053912 18907368 10% /

devtmpfs 494100 0 494100 0% /dev

tmpfs 508428 84 508344 1% /dev/shm

tmpfs 508428 7120 501308 2% /run

tmpfs 508428 0 508428 0% /sys/fs/cgroup

/dev/sda5 10475520 5136820 5338700 50% /usr

/dev/sda7 37214460 32932 37181528 1% /mydata

/dev/sda2 31441920 1296484 30145436 5% /var

/dev/sda1 508588 156280 352308 31% /boot

tmpfs 101688 20 101668 1% /run/user/42

tmpfs 101688 0 101688 0% /run/user/0

[root@localhost ~]# df -a

Filesystem 1K-blocks Used Available Use% Mounted on

rootfs - - - - /

sysfs 0 0 0 - /sys

proc 0 0 0 - /proc

devtmpfs 494100 0 494100 0% /dev

securityfs 0 0 0 - /sys/kernel/security

tmpfs 508428 84 508344 1% /dev/shm

devpts 0 0 0 - /dev/pts

tmpfs 508428 7120 501308 2% /run

tmpfs 508428 0 508428 0% /sys/fs/cgroup

cgroup 0 0 0 - /sys/fs/cgroup/systemd

pstore 0 0 0 - /sys/fs/pstore

cgroup 0 0 0 - /sys/fs/cgroup/cpu,cpuacct

cgroup 0 0 0 - /sys/fs/cgroup/blkio

cgroup 0 0 0 - /sys/fs/cgroup/perf_event

cgroup 0 0 0 - /sys/fs/cgroup/net_cls

cgroup 0 0 0 - /sys/fs/cgroup/cpuset

cgroup 0 0 0 - /sys/fs/cgroup/freezer

cgroup 0 0 0 - /sys/fs/cgroup/memory

cgroup 0 0 0 - /sys/fs/cgroup/devices

cgroup 0 0 0 - /sys/fs/cgroup/hugetlb

configfs 0 0 0 - /sys/kernel/config

/dev/sda3 20961280 2054468 18906812 10% /

/dev/sda5 10475520 5136820 5338700 50% /usr

systemd-1 0 0 0 - /proc/sys/fs/binfmt_misc

mqueue 0 0 0 - /dev/mqueue

debugfs 0 0 0 - /sys/kernel/debug

hugetlbfs 0 0 0 - /dev/hugepages

nfsd 0 0 0 - /proc/fs/nfsd

/dev/sda7 37214460 32932 37181528 1% /mydata

/dev/sda2 31441920 1296484 30145436 5% /var

sunrpc 0 0 0 - /var/lib/nfs/rpc_pipefs

/dev/sda1 508588 156280 352308 31% /boot

tmpfs 101688 20 101668 1% /run/user/42

fusectl 0 0 0 - /sys/fs/fuse/connections

gvfsd-fuse 0 0 0 - /run/user/42/gvfs

tmpfs 101688 0 101688 0% /run/user/0

[root@localhost ~]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/sda3 20G 2.0G 19G 10% /

devtmpfs 483M 0 483M 0% /dev

tmpfs 497M 84K 497M 1% /dev/shm

tmpfs 497M 7.0M 490M 2% /run

tmpfs 497M 0 497M 0% /sys/fs/cgroup

/dev/sda5 10G 4.9G 5.1G 50% /usr

/dev/sda7 36G 33M 36G 1% /mydata

/dev/sda2 30G 1.3G 29G 5% /var

/dev/sda1 497M 153M 345M 31% /boot

tmpfs 100M 20K 100M 1% /run/user/42

tmpfs 100M 0 100M 0% /run/user/0

[root@localhost ~]# df -H

Filesystem Size Used Avail Use% Mounted on

/dev/sda3 22G 2.1G 20G 10% /

devtmpfs 506M 0 506M 0% /dev

tmpfs 521M 87k 521M 1% /dev/shm

tmpfs 521M 7.3M 514M 2% /run

tmpfs 521M 0 521M 0% /sys/fs/cgroup

/dev/sda5 11G 5.3G 5.5G 50% /usr

/dev/sda7 39G 34M 39G 1% /mydata

/dev/sda2 33G 1.4G 31G 5% /var

/dev/sda1 521M 161M 361M 31% /boot

tmpfs 105M 21k 105M 1% /run/user/42

tmpfs 105M 0 105M 0% /run/user/0

[root@localhost ~]# df -T

Filesystem Type 1K-blocks Used Available Use% Mounted on

/dev/sda3 xfs 20961280 2050340 18910940 10% /

devtmpfs devtmpfs 494100 0 494100 0% /dev

tmpfs tmpfs 508428 84 508344 1% /dev/shm

tmpfs tmpfs 508428 7120 501308 2% /run

tmpfs tmpfs 508428 0 508428 0% /sys/fs/cgroup

/dev/sda5 xfs 10475520 5136820 5338700 50% /usr

/dev/sda7 xfs 37214460 32932 37181528 1% /mydata

/dev/sda2 xfs 31441920 1296484 30145436 5% /var

/dev/sda1 xfs 508588 156280 352308 31% /boot

tmpfs tmpfs 101688 20 101668 1% /run/user/42

tmpfs tmpfs 101688 0 101688 0% /run/user/0

[root@localhost ~]# df -lhT

Filesystem Type Size Used Avail Use% Mounted on

/dev/sda3 xfs 20G 2.0G 19G 10% /

devtmpfs devtmpfs 483M 0 483M 0% /dev

tmpfs tmpfs 497M 84K 497M 1% /dev/shm

tmpfs tmpfs 497M 7.0M 490M 2% /run

tmpfs tmpfs 497M 0 497M 0% /sys/fs/cgroup

/dev/sda5 xfs 10G 4.9G 5.1G 50% /usr

/dev/sda7 xfs 36G 33M 36G 1% /mydata

/dev/sda2 xfs 30G 1.3G 29G 5% /var

/dev/sda1 xfs 497M 153M 345M 31% /boot

tmpfs tmpfs 100M 20K 100M 1% /run/user/42

tmpfs tmpfs 100M 0 100M 0% /run/user/0

[root@localhost ~]# df -lhT -t xfs

Filesystem Type Size Used Avail Use% Mounted on

/dev/sda3 xfs 20G 2.0G 19G 10% /

/dev/sda5 xfs 10G 4.9G 5.1G 50% /usr

/dev/sda7 xfs 36G 33M 36G 1% /mydata

/dev/sda2 xfs 30G 1.3G 29G 5% /var

/dev/sda1 xfs 497M 153M 345M 31% /boot

[root@localhost ~]# df -lhT -x xfs

Filesystem Type Size Used Avail Use% Mounted on

devtmpfs devtmpfs 483M 0 483M 0% /dev

tmpfs tmpfs 497M 84K 497M 1% /dev/shm

tmpfs tmpfs 497M 7.0M 490M 2% /run

tmpfs tmpfs 497M 0 497M 0% /sys/fs/cgroup

tmpfs tmpfs 100M 20K 100M 1% /run/user/42

tmpfs tmpfs 100M 0 100M 0% /run/user/0

 

三 du命令

du 用于统计磁盘上文件的大小

 

 

四 实战

[root@localhost ~]# du -s /etc

29136 /etc

[root@localhost ~]# du -sb *.tar.gz

90029041 go1.8.3.linux-amd64.tar.gz

6396996 httpd-2.2.9.tar.gz

139895354 lnmp1.0-full.tar.gz

[root@localhost ~]# du -sm *.tar.gz

86 go1.8.3.linux-amd64.tar.gz

7 httpd-2.2.9.tar.gz

134 lnmp1.0-full.tar.gz

[root@localhost ~]# du -sh *.tar.gz

86M go1.8.3.linux-amd64.tar.gz

6.2M httpd-2.2.9.tar.gz

134M lnmp1.0-full.tar.gz