df/du 命令
【NAME】
df - report file system disk space usage
查看文件系統的磁盤空間使用情況
【SYNOPSIS】
df [OPTION]... [FILE]...
【OPTIONS】
-l:僅顯示本地文件的相關信息;
-h:human-readable,人類可讀的方式顯示;
-i:顯示inode的使用狀態而非blocks;
【EXAMPLES】
示例:df不帶參數,查看所有磁盤使用情況,包括網絡磁盤。
[root@Centos6.8-180 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/myvg-lv_root
10190136 1576032 8089816 17% /
tmpfs 502068 0 502068 0% /dev/shm
/dev/sda1 487652 34543 427509 8% /boot
/dev/mapper/myvg-lv_home
5029504 136648 4630712 3% /home
/dev/mapper/myvg-lv_usr
15350768 4183516 10380820 29% /usr
/dev/mapper/myvg-lv_var
10190136 4192372 5473476 44% /var
/dev/sr0 3824484 3824484 0 100% /mnt
/dev/sda3 10318244 23036 9771072 1% /mydata
示例:df -l參數,僅顯示本地磁盤使用情況
[root@Centos6.8-180 ~]# df -l
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/myvg-lv_root
10190136 1576032 8089816 17% /
tmpfs 502068 0 502068 0% /dev/shm
/dev/sda1 487652 34543 427509 8% /boot
/dev/mapper/myvg-lv_home
5029504 136648 4630712 3% /home
/dev/mapper/myvg-lv_usr
15350768 4183516 10380820 29% /usr
/dev/mapper/myvg-lv_var
10190136 4192372 5473476 44% /var
/dev/sr0 3824484 3824484 0 100% /mnt
/dev/sda3 10318244 23036 9771072 1% /mydata
示例:df -h參數,以人類可讀的方式顯示;
[root@Centos6.8-180 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/myvg-lv_root
9.8G 1.6G 7.8G 17% /
tmpfs 491M 0 491M 0% /dev/shm
/dev/sda1 477M 34M 418M 8% /boot
/dev/mapper/myvg-lv_home
4.8G 134M 4.5G 3% /home
/dev/mapper/myvg-lv_usr
15G 4.0G 9.9G 29% /usr
/dev/mapper/myvg-lv_var
9.8G 4.0G 5.3G 44% /var
/dev/sr0 3.7G 3.7G 0 100% /mnt
/dev/sda3 9.9G 23M 9.4G 1% /mydata
示例:df -i參數,查看磁盤inode使用情況;
[root@Centos6.8-180 ~]# df -i
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/mapper/myvg-lv_root
655360 7659 647701 2% /
tmpfs 125517 1 125516 1% /dev/shm
/dev/sda1 128016 38 127978 1% /boot
/dev/mapper/myvg-lv_home
327680 5518 322162 2% /home
/dev/mapper/myvg-lv_usr
983040 139128 843912 15% /usr
/dev/mapper/myvg-lv_var
655360 6860 648500 2% /var
/dev/sr0 0 0 0 - /mnt
/dev/sda3 655360 12 655348 1% /mydata
du 命令
【NAME】
du - estimate file space usage
估計文件使用空間
【SYNOPSIS】
du [OPTION]... [FILE]...
【OPTIONS】
-a:顯示所有文件和目錄的大小,包含隱藏文件;
-s: sumary,顯示目錄
-h: human-readable,以人類可讀方式顯示;
【EXAMPLES】
示例:du,不帶參數
[root@Centos6.8-180 ~]# du /tmp
4 /tmp/.esd-0
4 /tmp/.ICE-unix
4 /tmp/pulse-EDIkCo7tuxQf
4 /tmp/keyring-4uIHsm
44 /tmp
示例:du -a參數,顯示所有文件和目錄的大小,包含隱藏文件;
[root@Centos6.8-180 ~]# du -a /tmp
4 /tmp/yum_save_tx-2016-12-06-06-27Pkv4_8.yumtx
4 /tmp/yum_save_tx-2016-11-30-18-45HZBw1c.yumtx
4 /tmp/yum_save_tx-2016-11-30-18-38hNP_kI.yumtx
0 /tmp/.esd-0/socket
4 /tmp/.esd-0
4 /tmp/.ICE-unix
4 /tmp/yum_save_tx-2016-11-30-18-378FVx6W.yumtx
4 /tmp/yum_save_tx-2016-12-05-04-50CQAWLw.yumtx
0 /tmp/pulse-EDIkCo7tuxQf/native
4 /tmp/pulse-EDIkCo7tuxQf
4 /tmp/yum_save_tx-2016-12-06-06-37qnGiMz.yumtx
0 /tmp/keyring-4uIHsm/socket.pkcs11
0 /tmp/keyring-4uIHsm/socket.ssh
0 /tmp/keyring-4uIHsm/socket
4 /tmp/keyring-4uIHsm
44 /tmp
示例:du -s /etc,顯示/etc/目錄下所有文件的大小;
[root@Centos6.8-180 ~]# ls -ld /etc
drwxr-xr-x. 128 root root 12288 12月 6 14:00 /etc
[root@Centos6.8-180 ~]# ls -lhd /etc
drwxr-xr-x. 128 root root 12K 12月 6 14:00 /etc
[root@Centos6.8-180 ~]# ls -lhd /usr
drwxr-xr-x. 14 root root 4.0K 11月 8 18:13 /usr
[root@Centos6.8-180 ~]# du -sh /etc
36M /etc #這是/etc目錄內所有文件大小之和;