DirHash

Windows command line utility to compute hash of directories and files

Copyright (c) 2015-2021 Mounir IDRASSI [email protected]

3-clause BSD license ("New BSD License")

Home page: https://idrassi.github.io/DirHash/

Usage

DirHash.exe DirectoryOrFilePath [HashAlgo] [-t ResultFileName] [-progress] [-sum] [-sumRelativePath] [-verify FileName] [-threads] [-clip] [-lowercase] [-overwrite] [-quiet] [-nologo] [-nowait] [-skipError] [-hashnames [-stripnames]] [-exclude pattern1] [-exclude patter2] [-nofollow]

DirHash.exe -benchmark [HashAlgo | All] [-t ResultFileName] [-clip] [-overwrite] [-quiet] [-nologo] [-nowait]

Possible values for HashAlgo (not case sensitive):

• MD5
• SHA1
• SHA256
• SHA384
• SHA512
• Streebog
• Blake2s
• Blake2b
• Blake3

If HashAlgo is not specified, Blake3 is used by default.

ResultFileName specifies an optional text file where the result will be appended.

if -benchmark is specified, program will perform speed benchmark of the selected hash algorithm

if -mscrypto specified, program will use Windows native implementation of hash algorithms (This is always enabled on Windows ARM platforms since OpenSSL is too slow on them).

if -sum is specified, program will output the hash of every file processed in a format similar to shasum.

if -sumRelativePath is specified (only when -sum is specified), the file paths are stored in the output file as relative to the input directory.

if -verify is specified, program will verify the hash against value(s) present on the specified file. The argument to this switch must be either a checksum file or a result file.

if -threads is specified (only when -sum or -verify specified), multithreading will be used to accelerate hashing of files.

if -clip is specified, the hash result is copied to Windows clipboard. This switch is ignored when -sum is specified.

if -lowercase is specified, program outputs hash value(s) in lower case instead of upper case.

If -progress is specified, information about the progress of file hash operation is displayed.

If -overwrite is specified (only when -t is present), the output text file will be overwritten instead of having hash result appended to it.

If -quiet is specified, no text is displayed or written to the output file except the hash value.

If -nowait is specified, program will exit immediately after displaying the hash result. Otherwise, it prompts user to hit a key before it exits.

If -hashnames is specified, the case sensitive names of the files and directories will be included in the hash computation. Otherwise, only files content is used.

If -stripnames is specified (only when -hashnames also specified), only the the last path portion of DirectoryOrFilePath is used for hash calculation.

If -exclude is specified, it must be followed by a string indicating the file type that must be excluded from the hash computation. For example, to exclude .log files, you specify "-exclude *.log". This switch can be repeated many times in the command line to specify different file types to exclude.

If -skipError is specified, ignore any encountered errors and continue processing.

If -nologo is specified, don't display the copyright message and version number on startup.

if -nofollow is specified, don't follow symbolic links, junction points or mount points, thus excluding them from hash computation.

DirHash can also be configured using a configuration file called DirHash.ini and which must be on the same folder as DirHash.exe. When Sum=True is specified in DirHash.ini, it will have an effect only if -verify is not specified in the command line. An example of DirHash.ini is shown below:

[Defaults]
Hash=Blake3
Sum=True
SumRelativePath=True
Threads=True
Quiet=False
Nologo=True
NoWait=True
ShowProgress=False
clip=True
hashnames=False
stripnames=False
lowercase=False
MSCrypto=False
NoFollow=False