业务场景：应用git提交readme.txt文件，成果涌现以下提醒：
[pms@yhd-jqhadoop39 /home/pms/workspace/ouyangyewei/learngit] $git commit -m "add readme.txt" *** Please tell me who you are. Run git config --global user.email "[email protected]" git config --global user.name "Your Name" to set your account"s default identity. Omit --global to set the identity only in this repository. fatal: empty ident name (for <[email protected]>) not allowed[pms@yhd-jqhad
