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Comando df

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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 dummy 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
–total produce a grand total
-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
-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’