Search notes:

icacls.exe

Manage discretionary access control lists (DACL) on files and directories.
icacls.exe is newer than cacls.exe
Some abbreviations are:
In PowerShell, there is also the cmdlet get-acl. 
icacls C:\Windows\SysWOW64\d3d9.dll /grant *S-1-5-32-544:F

See also

Powershell command noun: acl
The Sysinternals tool AccessChk.

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