.TH SHA1SUM 1 sbase\-VERSION
.SH NAME
sha1sum \- compute SHA-1 message digest
.SH SYNOPSIS
.B sha1sum
.RB [\-c]
.RI [ file ...]
.TP
.B \-c
read list of SHA1 checksums from file and check them
.SH DESCRIPTION
Print SHA-1 (160-bit) checksums. With no file, read standard input.