b2sum: Get BLAKE2 Checksum
b2sum | |
|---|---|
| Category | Command Line Program |
| Part Of | GUN Core Utilities |
| Classification | Tier 1 |
| Official Documentation | GNU b2sum |
1 Description
The b2sum program accepts as input the name of zero or more files. For each file the b2sum
program will compute a checksum using the BLAKE2 algorithm. The checksum(s) will be printed
to STDOUT with one file checksum being output per line.
2 Arguments
The table below lists the command line options for the b2sum program.
| Argument | Description |
|---|---|
-l, --length |
Alter the default digest length. The value specified is the length
in bits and thus must be a multiple of 8. This option will be
ignored when --check is specified.
|
--help |
Print some information about how the b2sum program works. |
--version |
Print version information and exit. |
3 Return Values
The b2sum will exit with zero upon success and a positive integer otherwise.
| b2sum Return Values | |
|---|---|
| Return Value | Description |
0 |
Successful termination. b2sum completed successfully. |
4 Examples
4.1 Get Checksum For File
The example below demonstrates using the b2sum program to obtain a BLAKE2 checksum for a text file.
user-1@vm:~$ b2sum file_1.txt
fec91c70284c72d0d4e3684788a90de9338a5b2f47f01fedbe203cafd68708718ae5672d10eca804a8121904047d40d1d6cf11e7a76419357a9469af41f22d01 file_1.txt
user-1@vm:~$
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