The Wiert Corner – irregular stream of stuff

I have had these two batch files on my system forever:

• sha1.bat:
  

  :: https://superuser.com/questions/245775/is-there-a-built-in-checksum-utility-on-windows-7
  :: https://www.mcbsys.com/blog/2017/03/use-certutil-to-get-file-hash/
  :: Windows 7 has case sensitive Hash algorithms: MD2 MD4 MD5 SHA1 SHA256 SHA384 SHA512
  certUtil -hashfile %* SHA1

• sha256.bat:
  

  :: https://superuser.com/questions/245775/is-there-a-built-in-checksum-utility-on-windows-7
  :: https://www.mcbsys.com/blog/2017/03/use-certutil-to-get-file-hash/
  :: Windows 7 has case sensitive Hash algorithms: MD2 MD4 MD5 SHA1 SHA256 SHA384 SHA512
  certUtil -hashfile %* SHA256

But I forgot to blog about [Wayback/Archive] Use Certutil to Get File Hash | MCB Systems mentioning:

on Windows 7, the hash algorithms are case-sensitive. Be sure to type, for example, “MD5”, not “md5”. On Windows 8.1 and 10, case doesn’t matter

I did mention the first link in “error: invalid object 100644” “git svn”, though only in a by-line. So thanks [Wayback/Archive] user64996 for asking and:

• [Wayback/Archive] tedr2 for answering [Wayback/Archive] Is there a built-in checksum utility on Windows 7? – Super User:
  

  CertUtil is a pre-installed Windows utility, that can be used to generate hash checksums:

  certUtil -hashfile pathToFileToCheck [HashAlgorithm]
  

  HashAlgorithm choices: MD2 MD4 MD5 SHA1 SHA256 SHA384 SHA512

  So for example, the following generates an MD5 checksum for the file C:\TEMP\MyDataFile.img:

  CertUtil -hashfile C:\TEMP\MyDataFile.img MD5
  

  Original solution by Laisvis Lingvevicius

  ---

  To check if the hash is correct, you can use this Powershell one-liner:

  if ( $($(CertUtil -hashfile C:\TEMP\MyDataFile.img MD5)[1] -replace " ","") -eq "your_hash" ) { echo "ok" }

• [Wayback/Archive] Christian Long for answering [Wayback/Archive] hashing – Is there a built-in checksum utility on Windows 7? – Super User:
  

  PowerShell version 4 and up includes the [Wayback/Archive] Get-FileHash cmdlet.

  powershell get-filehash -algorithm md5 <file_to_check>
  

  Use [Wayback/Archive] doskey to make a persistent alias that’s easier to remember.

  doskey sha1sum=powershell get-filehash -algorithm sha1 "$1"
  doskey md5sum=powershell get-filehash -algorithm md5 "$1"
  

–jeroen