# SNESSHELL
a user provided nonlinear solver
## See Also
`SNESCreate()`, `SNES`, `SNESSetType()`, `SNESType`, `SNESShellGetContext()`, `SNESShellSetContext()`, `SNESShellSetSolve()`
## Level
advanced
## Location
src/snes/impls/shell/snesshell.c
## Examples
src/snes/tutorials/ex35.c.html
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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/snes/impls/shell/snesshell.c)
[Index of all SNES routines](index.md)
[Table of Contents for all manual pages](/docs/manualpages/index.md)
[Index of all manual pages](/docs/manualpages/singleindex.md)