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How to calculate the MD5Sum of a file

The MD5Sum is a checksum calculated from the content of a file. This allows to verify that a file (for example the YASARA installer) has been downloaded correctly.

Linux:

  • The required md5sum program is already present on virtually all computers.
  • Open a terminal, cd to the directory containing the file to check and type
md5sum NameOfFileToCheck

MacOS:

  • The required md5 program is already present on all Apple computers.
  • Open a terminal, cd to the directory containing the file to check and type
md5 NameOfFileToCheck

Windows:

  • Click here to download the program md5sum.exe, save it in the folder that contains the file to check.
  • Open a DOS prompt by clicking "Run" in the start menu and typing command (Windows 9x/ME) or cmd (WinNT/2K/XP/Vista).
  • In the DOS prompt window, use the cd command to navigate to the folder that contains the file to check. For example, assuming that the YASARA installer is in C:\Program Files, then the command would be: cd "c:\Program Files"
  • If it is on another drive, e.g. on the D: drive, you have to change the drive with d: and then change to the proper folder as shown above.
  • Now type
md5sum NameOfFileToCheck
  • When asked for the md5sum by us, and copy/paste does not work, you don't have to manually type the entire checksum. The first six characters are enough.