sum.1

<B>Digital的Unix操作系统VAX 4.2源码</B>

.\" SCCSID: @(#)sum.1	8.1	9/11/90
.TH sum 1 
.SH Name
sum \- print object file's checksum
.SH Syntax
.B sum
\fIfile...\fR
.SH Description
.NXR "sum command"
.NXA "sum command" "wc command"
.NXA "wc command" "sum command"
.NXR "file" "getting block count"
The
.PN sum
command calculates and prints a 16-bit checksum for the named file,
and also prints the number of blocks in the file.
It is typically used to look for bad spots, or
to validate a file communicated over
some transmission line.
.SH Diagnostics
.B `Read error'
is indistinguishable from end of file on
most devices; check the block count.
.SH See Also
wc(1)