DU/DF enables you to view disk usage
DU
By searching for files to calculate the size of each file and then add it up, the files du can see are only some existing files that have not been deleted. The size he calculated is the sum of all the file sizes that he currently thinks exist.
Usage: du [option]... [file]... //Or: du [options]... -- files0 from = f Summarize disk usage of the set of FILEs, recursively for directories. //Required parameters apply to both long and short options. -0, --null end each output line with NUL, not newline -a, --all write counts for all files, not just directories --apparent-size print apparent sizes, rather than disk usage; although the apparent size is usually smaller, it may be larger due to holes in ('sparse') files, internal fragmentation, indirect blocks, and the like -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 -b, --bytes equivalent to '--apparent-size --block-size=1' -c, --total produce a grand total -D, --dereference-args dereference only symlinks that are listed on the command line -d, --max-depth=N print the total for a directory (or file, with --all) only if it is N or fewer levels below the command line argument; --max-depth=0 is the same as --summarize --files0-from=F summarize disk usage of the NUL-terminated file names specified in file F; if F is -, then read names from standard input -H equivalent to --dereference-args (-D) -h, --human-readable print sizes in human readable format (e.g., 1K 234M 2G) --inodes list inode usage information instead of block usage -k like --block-size=1K -L, --dereference dereference all symbolic links -l, --count-links count sizes many times if hard linked -m like --block-size=1M -P, --no-dereference don't follow any symbolic links (this is the default) -S, --separate-dirs for directories do not include size of subdirectories --si like -h, but use powers of 1000 not 1024 -s, --summarize display only a total for each argument -t, --threshold=SIZE exclude entries smaller than SIZE if positive, or entries greater than SIZE if negative --time show time of the last modification of any file in the directory, or any of its subdirectories --time=WORD show time as WORD instead of modification time: atime, access, use, ctime or status --time-style=STYLE show times using STYLE, which can be: full-iso, long-iso, iso, or +FORMAT; FORMAT is interpreted like in 'date' -X, --exclude-from=FILE exclude files that match any pattern in FILE --exclude=PATTERN exclude files that match PATTERN -x, --one-file-system skip directories on different file systems --help Display this help message and exit --version Display version information and exit //The displayed values are from -- block size, Du block size, block size //And the first available SIZE unit in the BLOCKSIZE environment variable. //Otherwise, the default unit is 1024 bytes (or 512, if posixly'u 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). GNU coreutils online help: <http://www.gnu.org/software/coreutils/> //Please report the translation error of du to < http://translationproject.org/team/zh CN. HTML > Full documentation at: <http://www.gnu.org/software/coreutils/du> or available locally via: info '(coreutils) du invocation'
DF
Get the information of space size quickly through the file system. When we delete a file, the file does not It disappears in the file system immediately, but temporarily. When all programs are not used, it will be released according to the OS rules For the deleted files, df records the size of the files obtained through the file system. What is better than du is that df can see the deleted files When calculating the size of the file, the space of this part is added, which is more accurate.
Usage: df [option]... [file]... Show information about the file system on which each FILE resides, or all file systems by default. //Required parameters apply to both long and short options. -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 display inode Information not block usage -k Namely--block-size=1K -l, --local Show only native file systems --no-sync Do not synchronize before getting usage data(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 message and exit --version Display version information and exit //The displayed values are from -- block size, DF block size, block size //And the first available SIZE unit in the BLOCKSIZE environment variable. //Otherwise, the default unit is 1024 bytes (or 512, if posixly'u 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/> //Please report the translation error of df to < http://translationproject.org/team/zh CN. HTML > Full documentation at: <http://www.gnu.org/software/coreutils/df> or available locally via: info '(coreutils) df invocation'