checksums - Tool for making/verifying checksums of directory trees
checksums [OPTIONS] [DIRECTORY]
Tool for making/verifying checksums of directory trees.
Use the generated checksums to automatically verify file/directory tree correctness.
All output is wrapped to 80 columns.
Exit values and possible errors:
1 - option parsing error
2 - hash lengths differ between selected and saved
3 - failed to parse hashes file
N+3 - N files didn't match
-a --algorithm <algorithm>
Set the hashing algorithm to use.
Supported algorithms: SHA1, SHA2-256, SHA2-512, SHA3-256, SHA3-512, BLAKE,
BLAKE2, CRC8, CRC16, CRC32, CRC64, MD5, MD6-128,
MD6-256, MD6-512, XOR8
-c --create
Create directory hashes, rather than verifying them.
Directory hashes are output to the output file, which, if not specified, will
be "`DIRECTORY`.hash".
Will fail if the output file already exists and `--force` is not specified.
Exclusive with `--verify`. Overrides `--verify`.
-v --verify
Verify directory hashes. Default.
Exclusive with `--create`. Overrides `--create`.
-d --depth <depth>
Set max recursion depth to `depth`. Default: 0.
Exclusive with `--recursive`. Overrides `--recursive`.
-r --recursive
Set max recursion depth to infinity.
Exclusive with `--depth`. Overrides `--depth`.
--force
Override output file in `--create` mode. No meaning in `--verify` mode.
--follow-symlinks
Recurse down symlinks. Default.
--no-follow-symlinks
Don't recurse down symlinks.
-i --ignore <<filename[,filename2][,filename3][,filenameN]...>>...
Add filename(s) to ignored files list. Default: none.
Ignored files are marked as such.
Accepted multiple times.
-j --jobs [jobs]
Amount of threads used for hashing. Default: # of CPU threads
One thread can hash one file at a time, potentially speeding up hashing
up to `jobs` times.
No/empty value: # of CPU threads. -1: Infinite
[DIRECTORY]
Directory to create/verify hash for. Default: current workdir.
checksums [-v] [-f infile]
Verify the current directory tree against the saved hashes.
`-v` is not necessary as it's the default.
*infile* defaults to "`DIRECTORY`.hash"
Example output:
File added: "file_that_was_not_here_before"
File removed: "file_that_was_here_before_but_not_now"
File ignored: "file_specified_with_ignore_now_or_during_creation"
File "file_that_did_not_change" matches
File "changed_file" doesn't match
Was: 8313958F86F7B15D4775D12886D479C1CFAAA111
Is : FCFC1548B30B5ACB25A7421D068E12F07DF74DCC
checksums -c [-f outfile] [--force]
Create hashes of the current directory tree for later verification.
*outfile* defaults to "`DIRECTORY`.hash".
Use `--force` to override *outfile*.
Example output:
FILE 722 / 722 [===============================================] 100.00 %
*outfile* contents:
a_file.txt 8313958F86F7B15D4775D12886D479C1CFAAA111
*outfile*.hash ----------------------------------------
different_file 8D742C1F2D39434771039E98AD854C72F91FCCA5
checksums [-d depth] [-r] [OTHER OPTIONS]
Recurse *depth* or infinity directories down.
Example output for *depth*=2:
File "dir1/dir2/file" matches
File "dir1/file" matches
File "file" matches
Written by nabijaczleweli <nabijaczleweli@gmail.com> and Zachary Dremann <dremann@gmail.com>
<https://github.com/nabijaczleweli/checksums/issues>
<https://github.com/nabijaczleweli/checksums>