# PetscOptionsInsert

Inserts into the options database from the command line, the environmental variable and a file.

### Synopsis

    #include "petsc.h"
    PetscErrorCode PETSC_DLLEXPORT PetscOptionsInsert(int *argc,char ***args,const char file[])

### Input Parameters

| argc | - count of number of command line arguments
| args | - the command line arguments
| file | - optional filename, defaults to ~username/.petscrc

### Note

Since PetscOptionsInsert() is automatically called by PetscInitialize(), the user does not typically need to call this routine. PetscOptionsInsert() can be called several times, adding additional entries into the database.

### See Also

PetscOptionsDestroy_Private(), PetscOptionsPrint()

Level:advanced
Location:src/sys/src/objects/options.c
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages

### Examples

src/snes/examples/tutorials/ex22.c.html
src/snes/examples/tutorials/ex23.c.html
src/snes/examples/tutorials/ex24.c.html
src/snes/examples/tutorials/ex30.c.html