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Cmd c echo x861/13/2024 ![]() These do not work: C:\>C:\Windows\System32\cmd.exe /C "C:\Program Files (x86)\gs\uninstgs.exe" "C:\Program Files (x86)\gs\gs8.63\uninstal.txt" If I try to run this via CMD /C, I found no way to coerce CMD.EXE to pass a quoted string as parameter to the exe file. The command, when run from the prompt, works fine, but needs quoting for its parameter: C:\>"C:\Program Files (x86)\gs\uninstgs.exe" "C:\Program Files (x86)\gs\gs8.63\uninstal.txt" \x86\Release, respectively.I'm trying to run a command from Perl, using Windows 7's CMD /C. The source code for VisualStudio 2017 is included and the compiled 64-bit and 32-bit binary executables are in the directories. I have written a small utility, which displays these environment variables for 64-bit and 32-bit processes. unless some program changes the value of this environment variable apriori. ![]() This string refers to the environment variable %ProgramFiles% which in turn, takes its data from the Registry value HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\ProgramW6432Dir. The registry value HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\ProgramFilesPath is especially noteworthy because most Windows installations put the string %ProgramFiles% into it, to be read by 64-bit processes. Whatever is entered into these Windows Registry values will be read by Windows Explorer into respective Environment Variables upon login and then copied to any child process that it subsequently spawns. Most default Windows installation put a string like C:\Program Files (x86) into the Registry value HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\ProgramFilesDir (x86) but this (and others) can be changed. and the source of the data for the %ProgramFiles(x86)% environment variable is the Registry value HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\ProgramFilesDir (x86) However, for a 64-bit process, the source of the data for the %ProgramFiles% environment variable is the Registry value HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\ProgramW6432Dir. So for example, for a 32-bit process, the source of the data for the %ProgramFiles% and %ProgramFiles(x86)% environment variables is the Registry value HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\ProgramFilesDir (x86). X\CommonW6432Dir : X\CommonW6432Dir Y\CommonW6432Dir X\CommonFilesDir (x86) : X\CommonFilesDir (x86) Y\CommonFilesDir (x86) X\CommonFilesDir : X\CommonFilesDir Y\CommonFilesDir ![]() X\ProgramW6432Dir : X\ProgramW6432Dir Y\ProgramW6432Dir X\ProgramFilesPath : X\ProgramFilesPath = %ProgramFiles% Y\ProgramFilesPath = %ProgramFiles(x86)% X\ProgramFilesDir (x86) : X\ProgramFilesDir (x86) Y\ProgramFilesDir (x86) X\ProgramFilesDir : X\ProgramFilesDir Y\ProgramFilesDir READING REGISTRY VALUES: Source for 64-bit process Source for 32-bit process %ProgramData% : Z\ProgramData Z\ProgramData %CommonProgramW6432% : X\CommonW6432Dir X\CommonW6432Dir %CommonProgramFiles(x86)% : X\CommonFilesDir (x86) X\CommonFilesDir (x86) %CommonProgramFiles% : X\CommonW6432Dir X\CommonFilesDir (x86) ![]() %ProgramFiles(x86)% : X\ProgramFilesDir (x86) X\ProgramFilesDir (x86) %ProgramFiles% : X\ProgramW6432Dir X\ProgramFilesDir (x86) READING ENVIRONMENT VARIABLES: Source for 64-bit process Source for 32-bit process Z = HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList Y = HKLM\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion The table below lists these data sources: X = HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion On a 64-bit Windows system, the reading of the various environment variables and some Windows Registry keys is redirected to different sources, depending whether the process doing the reading is 32-bit or 64-bit.
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