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Asked: 2026-05-24T13:59:58+00:00

I have this requirement where I need to find the full path for the

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I have this requirement where I need to find the full path for the C++ program from within. For Windows, I have the following solution. The argv[0] may or may not contain the full path. But I need to be certain.

TCHAR drive[_MAX_DRIVE], dir[_MAX_DIR], base[_MAX_FNAME], ext[_MAX_EXT];
TCHAR fullPath[255+1];
_splitpath(argv[0],drive,dir,base,ext);
SearchPath(NULL,base,ext,255,fullPath,NULL);

What is the Linux (gcc) equivalent for the above code? Would love to see a portable code.

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1 Answer

  1. Editorial Team

    On Linux (Posix?) you have a symbolic link /proc/self/exe which links to the full path of the executable.

    On Windows, use GetModuleFileName.

    Never rely on argv[0], which is not guaranteed to be anything useful.

    Note that paths and file systems are not part of the language and thus necessarily a platform-dependent feature.

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