DF(1) DF(1) df - report file system space usage df []... []... This manual page documents the GNU version of df. df displays the amount of space available on the file system containing each file name argument. If no file name is given, the space available on all currently mounted file systems is shown. Space is shown in 1K blocks by default, unless the environment variable POSIXLY_CORRECT is set, in which case 512-byte blocks are used. If an argument is the absolute file name of a device node containing a mounted file system, df shows the space available on that file system rather than on the file system containing the device node. This version of df cannot show the space available on unmounted file systems, because on most kinds of systems doing so requires non-portable intimate knowledge of file system structures. , . . -a, --all , , -B, --block-size= scale sizes by SIZE before printing them; see SIZE format below; E.g., '-BM' prints sizes in units of 1,048,576 bytes -h, --human-readable 1024 (., 1023M) -H, --si 1000 (., 1.1G) -i, --inodes - -k --block-size=1K -l, --local --no-sync () --output[=_] _, _. -P, --portability - --sync --total , -t, --type= -T, --print-type -x, --exclude-type= -v () --help --version --block-size, ,,DF_BLOCK_SIZE", ,,BLOCK_SIZE" ,,BLOCKSIZE" . , 1024 ( 512 ,,POSIXLY_CORRECT"). (: 10K 10*1024). K,M,G,T,P,E,Z,Y,R,Q ( 1024) KB,MB,... ( 1000). , : KiB=K, MiB=M, . _ . : ,,source", ,,fstype", ,,itotal", ,,iused", ,,iavail", ,,ipcent", ,,size", ,,used", ,,avail", ,,pcent", ,,file" ,,target" ( ). , . : bug-coreutils@gnu.org coreutils : : Copyright (C) 2026 Free Software Foundation, Inc. 3+: 3 . : . , . ,,info '(coreutils) df invocation'" ; 3 . . , - TODO <>. coreutils 9.11 2026 DF(1)