sed – Robin on Linux

Insert multiple lines in a specific position of a file

I used awk for quite a long time, but not his brother sed. A couple of days ago I want to insert two lines for a CMake file in a specific position and find a perfect answer: here.

Now I could add two lines by using:

sed -i '/^enable_language/i set(CMAKE_CUDA_ARCHITECTURES 86)\nset(CMAKE_CUDA_COMPILER /usr/local/cuda/bin/nvcc)' \
	cmake/public/cuda.cmake

The CMake file changed from:

if("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
   set(CMAKE_CUDA_HOST_COMPILER "${CMAKE_C_COMPILER}")
endif()
enable_language(CUDA)
set(CMAKE_CUDA_STANDARD ${CMAKE_CXX_STANDARD})
set(CMAKE_CUDA_STANDARD_REQUIRED ON)

if("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
   set(CMAKE_CUDA_HOST_COMPILER "${CMAKE_C_COMPILER}")
endif()
set(CMAKE_CUDA_ARCHITECTURES 86)
set(CMAKE_CUDA_COMPILER /usr/local/cuda/bin/nvcc)
enable_language(CUDA)
set(CMAKE_CUDA_STANDARD ${CMAKE_CXX_STANDARD})
set(CMAKE_CUDA_STANDARD_REQUIRED ON)