git

git clean -df

usage: git clean [-d] [-f] [-i] [-n] [-q] [-e ] [-x | -X] [—] …

-q, --quiet           do not print names of files removed
-n, --dry-run         dry run
-f, --force           force
-i, --interactive     interactive cleaning
-d                    remove whole directories
-e, --exclude <pattern>
                      add <pattern> to ignore rules
-x                    remove ignored files, too
-X                    remove only ignored files

.gitignore

• 1.touch .gitignore 创建.gitignore文件
• 2.echo ‘filename’ >> .gitignore 要忽略的文件写入.gitignore中