df.1m

unix v7是最后一个广泛发布的研究型UNIX版本

.TH DF 1M 
.SH NAME
df \- disk free
.SH SYNOPSIS
.B df
[ filesystem ] ...
.SH DESCRIPTION
.I Df
prints out the number of free blocks
available on the
.I filesystems.
If no file system is specified,
the free space on all of
the normally mounted file systems
is printed.
.SH FILES
Default file systems vary with installation.
.SH "SEE ALSO"
icheck(1)