Linux查看磁盘空间：df和du

最新推荐文章于 2024-09-06 10:34:37 发布

原创最新推荐文章于 2024-09-06 10:34:37 发布 · 597 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#df #du

Linux 专栏收录该内容

14 篇文章

订阅专栏

本文介绍了Linux系统中用于查看磁盘空间的两个重要命令：df和du。df命令用于查看整体磁盘使用情况，通过添加-h参数以更易读的方式展示剩余空间。而du命令则用于检查特定目录的磁盘使用状况，查找可能存在的大文件。通过添加-c参数可以显示总大小，-h参数以K/M/G为单位显示，-s参数仅显示总计。

df命令查看磁盘使用情况，查看还有多少磁盘空间。

df默认显示文件的单位是字节，较难读懂。使用-h命令，可以比较容易的看到容量大小

shaphicprb13137:~ # df
Filesystem     1K-blocks     Used Available Use% Mounted on
devtmpfs        32879244        8  32879236   1% /dev
tmpfs           33554432       80  33554352   1% /dev/shm
tmpfs           32887956  3279268  29608688  10% /run
tmpfs           32887956        0  32887956   0% /sys/fs/cgroup
/dev/xvda2      37024192 35859728    107504 100% /
/dev/xvde1     309505024 68799204 224977232  24% /opt
tmpfs            6578452        0   6578452   0% /run/user/3001
tmpfs            6578452       16   6578436   1% /run/user/483
tmpfs            6578452        0   6578452   0% /run/user/0

shaphicprb13137:~ # df -h
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs         32G  8.0K   32G   1% /dev
tmpfs            32G   80K   32G   1% /dev/shm
tmpfs            32G  3.2G   29G  10% /run
tmpfs            32G     0   32G   0% /sys/fs/cgroup
/dev/xvda2       36G   35G  105M 100% /
/dev/xvde1      296G   66G  215G  24% /opt
tmpfs           6.3G     0  6.3G   0% /run/user/3001
tmpfs           6.3G   16K  6.3G   1% /run/user/483
tmpfs           6.3G     0  6.3G   0% /run/user/0

du查看当前目录（或者某个目录）的磁盘使用情况，可以查看是否存在超大文件。默认查询当前目录下所有文件的大小：

shaphicprb13137:/home # du
4       ./ossuser/.fonts
4       ./ossuser/.local
4       ./ossuser/.config
4       ./ossuser/bin
4       ./ossuser/temp
8       ./ossuser/public_html
92      ./ossuser
4       ./dbuser/.fonts
4       ./dbuser/.local
4       ./dbuser/.config
4       ./dbuser/bin
8       ./dbuser/public_html
92      ./dbuser
4       ./ossadm/.fonts
12      ./ossadm/.cache/fontconfig
16      ./ossadm/.cache
24      ./ossadm/.ssh
24      ./ossadm/.java/fonts/1.8.0_212
28      ./ossadm/.java/fonts
32      ./ossadm/.java
4       ./ossadm/.local
4       ./ossadm/.config
16      ./ossadm/bin
8       ./ossadm/public_html
176     ./ossadm
424     ./hltreport
1184    .

常用参数：

-c :显示出列出的文件的总大小；

-h：按照K/M/G为单位显示；

-s：显示每个输出的参数的总计

shaphicprb13137:/home # du -h
4.0K    ./ossuser/.fonts
4.0K    ./ossuser/.local
4.0K    ./ossuser/.config
4.0K    ./ossuser/bin
4.0K    ./ossuser/temp
8.0K    ./ossuser/public_html
92K     ./ossuser
4.0K    ./dbuser/.fonts
4.0K    ./dbuser/.local
4.0K    ./dbuser/.config
4.0K    ./dbuser/bin
8.0K    ./dbuser/public_html
92K     ./dbuser
4.0K    ./ossadm/.fonts
12K     ./ossadm/.cache/fontconfig
16K     ./ossadm/.cache
24K     ./ossadm/.ssh
24K     ./ossadm/.java/fonts/1.8.0_212
28K     ./ossadm/.java/fonts
32K     ./ossadm/.java
4.0K    ./ossadm/.local
4.0K    ./ossadm/.config
16K     ./ossadm/bin
8.0K    ./ossadm/public_html
176K    ./ossadm
424K    ./hltreport
1.2M    .
shaphicprb13137:/home # du -l
4       ./ossuser/.fonts
4       ./ossuser/.local
4       ./ossuser/.config
4       ./ossuser/bin
4       ./ossuser/temp
8       ./ossuser/public_html
92      ./ossuser
4       ./dbuser/.fonts
4       ./dbuser/.local
4       ./dbuser/.config
4       ./dbuser/bin
8       ./dbuser/public_html
92      ./dbuser
4       ./ossadm/.fonts
12      ./ossadm/.cache/fontconfig
16      ./ossadm/.cache
24      ./ossadm/.ssh
24      ./ossadm/.java/fonts/1.8.0_212
28      ./ossadm/.java/fonts
32      ./ossadm/.java
4       ./ossadm/.local
4       ./ossadm/.config
16      ./ossadm/bin
8       ./ossadm/public_html
176     ./ossadm
424     ./hltreport
1184    .
shaphicprb13137:/home # du -c
4       ./ossuser/.fonts
4       ./ossuser/.local
4       ./ossuser/.config
4       ./ossuser/bin
4       ./ossuser/temp
8       ./ossuser/public_html
92      ./ossuser
4       ./dbuser/.fonts
4       ./dbuser/.local
4       ./dbuser/.config
4       ./dbuser/bin
8       ./dbuser/public_html
92      ./dbuser
4       ./ossadm/.fonts
12      ./ossadm/.cache/fontconfig
16      ./ossadm/.cache
24      ./ossadm/.ssh
24      ./ossadm/.java/fonts/1.8.0_212
28      ./ossadm/.java/fonts
32      ./ossadm/.java
4       ./ossadm/.local
4       ./ossadm/.config
16      ./ossadm/bin
8       ./ossadm/public_html
176     ./ossadm
424     ./hltreport
1184    .
1184    total
shaphicprb13137:/home # du -lhc
4.0K    ./ossuser/.fonts
4.0K    ./ossuser/.local
4.0K    ./ossuser/.config
4.0K    ./ossuser/bin
4.0K    ./ossuser/temp
8.0K    ./ossuser/public_html
92K     ./ossuser
4.0K    ./dbuser/.fonts
4.0K    ./dbuser/.local
4.0K    ./dbuser/.config
4.0K    ./dbuser/bin
8.0K    ./dbuser/public_html
92K     ./dbuser
4.0K    ./ossadm/.fonts
12K     ./ossadm/.cache/fontconfig
16K     ./ossadm/.cache
24K     ./ossadm/.ssh
24K     ./ossadm/.java/fonts/1.8.0_212
28K     ./ossadm/.java/fonts
32K     ./ossadm/.java
4.0K    ./ossadm/.local
4.0K    ./ossadm/.config
16K     ./ossadm/bin
8.0K    ./ossadm/public_html
176K    ./ossadm
424K    ./hltreport
1.2M    .
1.2M    total

shaphicprb13137:/home # du -sh
1.2M    .