# PetscGetHomeDirectory

Returns home directory name.

### Synopsis

    PetscErrorCode PETSC_DLLEXPORT PetscGetHomeDirectory(char dir[],size_t maxlen)

Not Collective

### Input Parameter

maxlen -maximum lengh allowed

### Output Parameter

dir -contains the home directory. Must be long enough to hold the name.

### Note

If PETSc cannot determine the home directory it makes dir a null string

On Windows machines the enviornmental variable HOME specifies the home directory.

Level:developer
Location:src/sys/src/fileio/ghome.c
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