sha1sum (1) Linux Manual Page
sha1sum – compute and check SHA1 message digest Synopsissha1sum [,OPTION/]… [,FILE/]… DescriptionPrint or check SHA1 (160-bit) checksums. With no FILE, or when FILE is -, read standard input. -b, –binary read in binary mode -c, –check read SHA1 sums from the FILEs and check them –tag create a BSD-style checksum -t, –text read in text…
