Linux View disk space size command _linux

Ubuntu view files and disk space size management

(1) View file size

View all file sizes (including subfolders) under the current folder

Du-sh

# du-h
15M   ./package
16K   ./.fontconfig
4.0K  ./.cache
5.1M  ./.rpmdb
20M   .

View all file sizes (including subfolders) under the specified folder

# du-h FTP
3.8G  ftp/sanya/doc
3.8G  ftp/sanya
4.0K  ftp/testftp/doc
1.4M  Ftp/testftp
875M  ftp/platform/doc/002-video
27M   ftp/platform/doc/001-pdf
5.2M  ftp/ Platform/doc/bbflash
1.2G  ftp/platform/doc/003-recording
2.1G  ftp/platform/doc
2.1G  FTP /platform
4.0K  ftp/pmo/doc
20K   ftp/pmo
36M   ftp/uf/doc/innovate-201207
36M   ftp/uf/doc
36M   ftp/uf
446M  ftp/code/doc
446M  ftp/code
6.3G  FTP

View the specified file size

# du-h./package/compat-libstdc++-33-3.2.3-69.el6.x86_64.rpm 
184K  ./package/compat-libstdc++- 33-3.2.3-69.el6.x86_64.rpm

View the specified folder size

# du-hs FTP
6.3G  FTP

Usage: du [options] ... [File] ...

Or: du [options] ...--files0-from=f

Calculate the amount of disk per file, and the total amount of the directory.

Parameters that must be used for long options are also required for short options.

-A,--all output the disk usage of all files, not only the directory

--apparent-size shows the surface dosage, not the amount of disk; Although the surface dosage is usually smaller, it can sometimes become larger because of sparse file "holes", internal fragments, and not directly referenced blocks.

-B,--block-size= size uses a block of the specified number of bytes

-B,--bytes equals--apparent-size--block-size=1

-C,--total display totals information

-D,--dereference-args the symbolic connections listed on the command line

--files0-from=f calculates the amount of disk space that is occupied by the filename in Nul at the end of the file F. If the value of F is "-", the file name is read from standard input

-H equals--dereference-args (-D)

-H,--human-readable displays dimensions in a readable manner (e.g. 1K 234M 2G)

--si is similar to-H, but uses 1000 as the base instead of 1024 when calculating

-K equals--block-size=1k

-L,--count-links if it's a hard connection, calculate its dimensions multiple times

-M equals--block-size=1m

-L,--dereference find the true destination of any symbolic link indication

-P,--no-dereference does not follow any symbolic links (default)

-0,--null each blank line as 0 bytes rather than a newline character

-S,--separate-dirs does not include the amount of subdirectories

-S,--summarize only calculates the total amount of each parameter in the command column, respectively

-X,--one-file-system skips directories on different file systems

-X,--exclude-from= file excludes files that match the pattern described in the specified file

--exclude=pattern excludes files that match patterns described in pattern

--MAX-DEPTH=N Displays the catalog totals (using a computed file with--all). When n is a specified number, the depth is n;

--max-depth=0 equals--summarize

--time Displays the last modified time of the directory or all files under that directory subdirectory

--time=word displays WORD time, not modified time: Atime,access,use,ctime or status

The--time-style= style displays the time according to the specified style (style interpretation rule and date command): Full-iso,long-iso,iso,+format

--HELP displays this help information and exits

--version display version information and exit [size] can be the following units (preceded by an integer): KB 1000,k 1024,mb 1000000,m 1048576, and G, T, P, E, Z, Y.

Please report the error to Du

GNU coreutils Project Homepage:

GNU Software general help:

Please report the translation error to the

(2) Ubuntu view disk space Size command

Df-h DF command is a Linux system to view the file system in disk partition units, you can add parameters to view the disk remaining space information, command format: DF-HL display format: File system capacity used available% mount point filesystem size Used avail use % mounted On/dev/hda2 45G 19G 24G 44%//dev/hda1 494

DF-  H

The DF command is a Linux system that looks at the file system on a disk partition, and can add parameters to view the disk's remaining space information, in command format:

Df-hl

The display format is:

File system capacity used available% mount point

FileSystem Size Used Avail use% mounted on

/dev/hda2 45G 19G 24G 44%/

/DEV/HDA1 494M 19M 450M 4%/boot

/dev/hda6 4.9G 2.2G 2.5G 47%/home

/dev/hda5 9.7G 2.9G 6.4G 31%/opt

None 1009M 0 1009M 0%/dev/shm

/dev/hda3 9.7G 7.2G 2.1G 78%/usr/local

/DEV/HDB2 75G 75G 0 100%/

/DEV/HDB2 75G 75G 0 100%/

Take the above output as an example, the meaning of the expression is:

The second hard drive (b) of the HD hard disk interface, the second partition (2), the capacity is 75G, 75G, usable is 0, so utilization is 100% and is mounted on the root partition directory (/).

The following is an explanation of the relevant commands:

DF-HL View disk remaining space

Df-h View the partition size of each root path

Du-sh [directory Name] Returns the size of the directory

DU-SM [Folder] returns the total m of this folder

More versatile you can enter commands to view:

DF--help
du--help

(3) Delete log files

Today, the company's Linux server did not put anything, but has been used 50%, a view of the original log file is too large, and then manually deleted,

This is faster.

Sudo/dev/null >/var/log/**.log

Here's a recommendation to use

sudo find/var/log/-type f-mtime +30-exec rm-f {} \;

Delete old files from 30 days ago

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