.Dd 2015-10-08
.Dt SHA256SUM 1
.Os sbase
.Sh NAME
.Nm sha256sum
.Nd compute or check SHA-256 message digests
.Sh SYNOPSIS
.Nm
.Op Fl c
.Op Ar file ...
.Sh DESCRIPTION
.Nm
writes SHA-256 (256-bit) checksums of each
.Ar file
to stdout.
If no
.Ar file
is given
.Nm
reads from stdin.
.Sh OPTIONS
.Bl -tag -width Ds
.It Fl c
Read list of SHA-256 checksums from each
.Ar file
and check them.
If no
.Ar file
is given
.Nm
reads from stdin.
.El