https://zhanghb55.github.io/docs/cheatsheet/Recent content in Cheatsheet onHugo -- gohugo.ioTue, 06 Oct 2020 08:48:23 +0000https://zhanghb55.github.io/docs/cheatsheet/misc/Thu, 12 Jan 2023 18:34:30 +0800https://zhanghb55.github.io/docs/cheatsheet/misc/Bash # A nice cheatsheet: https://devhints.io/bash Zip and unzip tar -czf abc.tar.gz files --exclude=pattern # gz -cjf # bz2 tar -xzf abc.tar.gz -C path Absolute path of current file script_dir=$(dirname $(readlink -f "$0")) Test if variable is set # From https://stackoverflow.com/questions/3601515/how-to-check-if-a-variable-is-set-in-bash if [ -z ${var+x} ]; then echo "var is unset"; else echo "var is set to '$var'"; fi Remove artifacts mis-installed by ninja xargs rm < install_manifest.txt Python # Read file line by line (using walrus operator)https://zhanghb55.github.io/docs/cheatsheet/git/Thu, 04 May 2023 20:09:42 +0800https://zhanghb55.github.io/docs/cheatsheet/git/ Checkout a specific commit to another folder git --work-tree=/path/to/folder checkout HEAD -- . Remove file from history git filter-branch -f --tree-filter 'rm -rf /path/to/file' HEAD Deinitialize submodule [link] git submodule deinit -f path/to/submodule rm -rf .git/modules/path/to/submodule git rm -f path/to/submodule git checkout -- .https://zhanghb55.github.io/docs/cheatsheet/cmake/Sun, 26 Feb 2023 12:58:14 +0800https://zhanghb55.github.io/docs/cheatsheet/cmake/Quick Start # target_include_directories(target PRIVATE ${directories}) target_link_libraries(target ${library_paths}) target_link_options(target PRIVATE LINKER:-rpath,${library_path}) Variables # Tutorial # https://cliutils.gitlab.io/modern-cmake/ Directory Variables # CMAKE_SOURCE_DIR: Top-level CMakeLists.txt file’s dir. CMAKE_CURRENT_SOURCE_DIR: This CMakeLists.txt files’ dir. PROJECT_SOURCE_DIR: Most recent CMakeLists.txt file that defines a project projectName_SOURCE_DIR: Directory of the projectName For binary directories, replace SOURCE with BINARY Snippets # Iterate all targets # https://stackoverflow.com/questions/37434946/how-do-i-iterate-over-all-cmake-targets-programmatically function(get_all_targets var) set(targets) get_all_targets_recursive(targets ${CMAKE_CURRENT_SOURCE_DIR}) set(${var} ${targets} PARENT_SCOPE) endfunction() macro(get_all_targets_recursive targets dir) get_property(subdirectories DIRECTORY ${dir} PROPERTY SUBDIRECTORIES) foreach(subdir ${subdirectories}) get_all_targets_recursive(${targets} ${subdir}) endforeach() get_property(current_targets DIRECTORY ${dir} PROPERTY BUILDSYSTEM_TARGETS) list(APPEND ${targets} ${current_targets}) endmacro() get_all_targets(all_targets) message("All targets: ${all_targets}") Custom commands # https://stackoverflow.https://zhanghb55.github.io/docs/cheatsheet/cpp/Wed, 08 Feb 2023 17:42:23 +0800https://zhanghb55.github.io/docs/cheatsheet/cpp/Split string # std::vector<std::string> split(const std::string &s, const std::string &delim=""){ std::string rr = "\\s+"; if(delim != ""){ rr = delim + "+"; } std::regex ws_re(rr); // whitespace std::vector<std::string> v( std::sregex_token_iterator(str.begin(), str.end(), ws_re, -1), std::sregex_token_iterator()); return v; } Binary file IO # void readbin(const std::string &filename, void *buffer) { std::ifstream fin(filename, std::ios::binary); LIZ_CHECKOPEN(fin, filename); std::copy( std::istreambuf_iterator<char>(fin), std::istreambuf_iterator<char>(), (char *)buffer); fin.close(); } void readbin_another_way(const std::string &filename, void *buffer){ std::ifstream fin(filename, std::ios::binary); LIZ_CHECKOPEN(fin, filename); fin.https://zhanghb55.github.io/docs/cheatsheet/compile/Thu, 12 Jan 2023 18:34:30 +0800https://zhanghb55.github.io/docs/cheatsheet/compile/GDB # Debugging LLVM OPT # # Run gdb gdb opt # Set breakpoint break llvm::Pass::preparePassManager # Run pass run -load ./mypass.so -hello < hello.bc > debug.log Clang # Clang Get IR # clang -S -emit-llvm CUDA Related # Compiling CUDA with clang: official document, in short: clang++ helloworld.cu -o helloworld --cuda-gpu-arch=<arch> \ -L<CUDA install path>/<lib64 or lib> \ -lcudart_static -ldl -lrt -pthread Linker # GLIBCXX # Check if a string exists in the shared library