Linux下 df 命令查看磁盘空间（linux用df命令查看磁盘）

Linux下可以用 df 命令查看磁盘空间

df

Filesystem 1K-blocks Used Available Use% Mounted on
udev 8123336 0 8123336 0% /dev
tmpfs 1630560 1896 1628664 1% /run
/dev/sda6 9545920 7380424 1660872 82% /
tmpfs 8152792 29944 8122848 1% /dev/shm
tmpfs 5120 4 5116 1% /run/lock
tmpfs 8152792 0 8152792 0% /sys/fs/cgroup
/dev/loop0 13312 13312 0 100% /snap/gnome-characters/139
/dev/loop2 14848 14848 0 100% /snap/gnome-logs/37
/dev/loop1 144128 144128 0 100% /snap/gnome-3-26-1604/74
/dev/loop4 14976 14976 0 100% /snap/gnome-logs/45
/dev/loop6 35072 35072 0 100% /snap/gtk-common-themes/808
/dev/loop7 2304 2304 0 100% /snap/gnome-calculator/238
/dev/loop8 13312 13312 0 100% /snap/gnome-characters/103
/dev/loop13 35456 35456 0 100% /snap/gtk-common-themes/818
/dev/loop15 13312 13312 0 100% /snap/gnome-characters/124
/dev/loop16 144384 144384 0 100% /snap/gnome-3-26-1604/70
/dev/loop17 2432 2432 0 100% /snap/gnome-calculator/180
/dev/loop10 3840 3840 0 100% /snap/gnome-system-monitor/51
/dev/loop11 3840 3840 0 100% /snap/gnome-system-monitor/57
/dev/loop14 2304 2304 0 100% /snap/gnome-calculator/260
/dev/loop9 90368 90368 0 100% /snap/core/5897
/dev/loop12 43264 43264 0 100% /snap/gtk-common-themes/701
/dev/loop3 91648 91648 0 100% /snap/core/6130
/dev/loop5 91648 91648 0 100% /snap/core/6034
/dev/sda7 15931832 10549072 4553732 70% /home
/dev/sda5 184301 75294 95388 45% /boot
tmpfs 1630556 20 1630536 1% /run/user/121
tmpfs 1630556 56 1630500 1% /run/user/1000

查看帮助

df --help

Usage: df [OPTION]... [FILE]...
Show information about the file system on which each FILE resides,
or all file systems by default.
Mandatory arguments to long options are mandatory for short options too.
 -a, --all include pseudo, duplicate, inaccessible file systems
 -B, --block-size=SIZE scale sizes by SIZE before printing them; e.g.,
 '-BM' prints sizes in units of 1,048,576 bytes;
 see SIZE format below
 -h, --human-readable print sizes in powers of 1024 (e.g., 1023M)
 -H, --si print sizes in powers of 1000 (e.g., 1.1G)
 -i, --inodes list inode information instead of block usage
 -k like --block-size=1K
 -l, --local limit listing to local file systems
 --no-sync do not invoke sync before getting usage info (default)
 --output[=FIELD_LIST] use the output format defined by FIELD_LIST,
 or print all fields if FIELD_LIST is omitted.
 -P, --portability use the POSIX output format
 --sync invoke sync before getting usage info
 --total elide all entries insignificant to available space,
 and produce a grand total
 -t, --type=TYPE limit listing to file systems of type TYPE
 -T, --print-type print file system type
 -x, --exclude-type=TYPE limit listing to file systems not of type TYPE
 -v (ignored)
 --help display this help and exit
 --version output version information and exit
Display values are in units of the first available SIZE from --block-size,
and the DF_BLOCK_SIZE, BLOCK_SIZE and BLOCKSIZE environment variables.
Otherwise, units default to 1024 bytes (or 512 if POSIXLY_CORRECT is set).
The SIZE argument is an integer and optional unit (example: 10K is 10*1024).
Units are K,M,G,T,P,E,Z,Y (powers of 1024) or KB,MB,... (powers of 1000).
FIELD_LIST is a comma-separated list of columns to be included. Valid
field names are: 'source', 'fstype', 'itotal', 'iused', 'iavail', 'ipcent',
'size', 'used', 'avail', 'pcent', 'file' and 'target' (see info page).
GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Full documentation at: <http://www.gnu.org/software/coreutils/df>
or available locally via: info '(coreutils) df invocation'

以MB为块的大小查看

df -m

Filesystem 1M-blocks Used Available Use% Mounted on
udev 7933 0 7933 0% /dev
tmpfs 1593 2 1591 1% /run
/dev/sda6 9323 7208 1622 82% /
tmpfs 7962 29 7934 1% /dev/shm
tmpfs 5 1 5 1% /run/lock
tmpfs 7962 0 7962 0% /sys/fs/cgroup
/dev/loop0 13 13 0 100% /snap/gnome-characters/139
/dev/loop2 15 15 0 100% /snap/gnome-logs/37
/dev/loop1 141 141 0 100% /snap/gnome-3-26-1604/74
/dev/loop4 15 15 0 100% /snap/gnome-logs/45
/dev/loop6 35 35 0 100% /snap/gtk-common-themes/808
/dev/loop7 3 3 0 100% /snap/gnome-calculator/238
/dev/loop8 13 13 0 100% /snap/gnome-characters/103
/dev/loop13 35 35 0 100% /snap/gtk-common-themes/818
/dev/loop15 13 13 0 100% /snap/gnome-characters/124
/dev/loop16 141 141 0 100% /snap/gnome-3-26-1604/70
/dev/loop17 3 3 0 100% /snap/gnome-calculator/180
/dev/loop10 4 4 0 100% /snap/gnome-system-monitor/51
/dev/loop11 4 4 0 100% /snap/gnome-system-monitor/57
/dev/loop14 3 3 0 100% /snap/gnome-calculator/260
/dev/loop9 89 89 0 100% /snap/core/5897
/dev/loop12 43 43 0 100% /snap/gtk-common-themes/701
/dev/loop3 90 90 0 100% /snap/core/6130
/dev/loop5 90 90 0 100% /snap/core/6034
/dev/sda7 15559 10303 4447 70% /home
/dev/sda5 180 74 94 45% /boot
tmpfs 1593 1 1593 1% /run/user/121
tmpfs 1593 1 1593 1% /run/user/1000

以人性化的方式查看

df -h

Filesystem Size Used Avail Use% Mounted on
udev 7.8G 0 7.8G 0% /dev
tmpfs 1.6G 1.9M 1.6G 1% /run
/dev/sda6 9.2G 7.1G 1.6G 82% /
tmpfs 7.8G 29M 7.8G 1% /dev/shm
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/loop0 13M 13M 0 100% /snap/gnome-characters/139
/dev/loop2 15M 15M 0 100% /snap/gnome-logs/37
/dev/loop1 141M 141M 0 100% /snap/gnome-3-26-1604/74
/dev/loop4 15M 15M 0 100% /snap/gnome-logs/45
/dev/loop6 35M 35M 0 100% /snap/gtk-common-themes/808
/dev/loop7 2.3M 2.3M 0 100% /snap/gnome-calculator/238
/dev/loop8 13M 13M 0 100% /snap/gnome-characters/103
/dev/loop13 35M 35M 0 100% /snap/gtk-common-themes/818
/dev/loop15 13M 13M 0 100% /snap/gnome-characters/124
/dev/loop16 141M 141M 0 100% /snap/gnome-3-26-1604/70
/dev/loop17 2.4M 2.4M 0 100% /snap/gnome-calculator/180
/dev/loop10 3.8M 3.8M 0 100% /snap/gnome-system-monitor/51
/dev/loop11 3.8M 3.8M 0 100% /snap/gnome-system-monitor/57
/dev/loop14 2.3M 2.3M 0 100% /snap/gnome-calculator/260
/dev/loop9 89M 89M 0 100% /snap/core/5897
/dev/loop12 43M 43M 0 100% /snap/gtk-common-themes/701
/dev/loop3 90M 90M 0 100% /snap/core/6130
/dev/loop5 90M 90M 0 100% /snap/core/6034
/dev/sda7 16G 11G 4.4G 70% /home
/dev/sda5 180M 74M 94M 45% /boot
tmpfs 1.6G 20K 1.6G 1% /run/user/121
tmpfs 1.6G 56K 1.6G 1% /run/user/1000

查看某一路径，如/home

df -h /home

Filesystem Size Used Avail Use% Mounted on
/dev/sda7 16G 11G 4.4G 70% /home