gitcredentials这是答案.
http://git-scm.com/docs/gitcredentials.html
DESCRIPTION
Git will sometimes need credentials from the user in order to perform operations; for example,it may need to ask for a username and password in order to access a remote repository over HTTP. This manual describes the mechanisms Git uses to request these credentials,as well as some features to avoid inputting these credentials repeatedly.
[…]
REQUESTING CREDENTIALS
Without any credential helpers defined,Git will try the following strategies to ask the user for usernames and passwords:
- If the
GIT_ASKPASS environment variable is set,the program specified by the variable is invoked. A suitable prompt is provided to the program on the command line,and the user’s input is read from its standard output.
- Otherwise,if the
core.askPass configuration variable is set,its value is used as above.
- Otherwise,if the
SSH_ASKPASS environment variable is set,the user is prompted on the terminal.
[…]
Credential helpers,on the other hand,are external programs from which Git can request both usernames and passwords; they typically interface with secure storage provided by the OS or other programs.
You may also have third-party helpers installed; search for credential-* in the output of git help -a,and consult the documentation of individual helpers. Once you have selected a helper,you can tell Git to use it by putting its name into the credential.helper variable.
git help -a | grep credential- *显示以下帮助器：
credential remote
credential-cache remote-ext
credential-cache--daemon remote-fd
credential-osxkeychain remote-ftp
credential-store remote-ftps
