搞定：Enter passphrase for key提示

使用ssh-genkey生成公用key，但是自己使用时会多次提示,Enter passphrase for key，这儿给出如何解决。

在${HOME}/.bashrc中增加如下代码：

1. alias auto_passphrase=auto_passphrase
2.    
3.    
4. SSH_ENV=~/.ssh/environment
5. # start the ssh-agent
6. function start_agent {
7.    echo "Initializing new SSH agent…"
8.    # spawn ssh-agent
9.    ssh-agent | sed 's/^echo/#echo/' > "$SSH_ENV"
10.    echo succeeded
11.    chmod 600 "$SSH_ENV"
12.    . "$SSH_ENV" > /dev/null
13.    ssh-add
14. }
15.    
16. # test for identities
17. function test_identities {
18.    # test whether standard identities have been added to the agent already
19.    ssh-add -l | grep "The agent has no identities" > /dev/null
20.    if [ $? -eq 0 ]; then
21.    ssh-add
22.       # $SSH_AUTH_SOCK broken so we start a new proper agent
23.       if [ $? -eq 2 ];then
24.       start_agent
25.       fi
26.    fi
27. }
28.    
29. #auto_ssh
30. function auto_passphrase {
31.    # check for running ssh-agent with proper $SSH_AGENT_PID
32.    if [ -n "$SSH_AGENT_PID" ]; then
33.       ps -ef | grep "$SSH_AGENT_PID" | grep ssh-agent > /dev/null
34.       if [ $? -eq 0 ]; then
35.       test_identities
36.       fi
37.    # if $SSH_AGENT_PID is not properly set, we might be able to load one from
38.    # $SSH_ENV
39.    else
40.       if [ -f "$SSH_ENV" ]; then
41.       . "$SSH_ENV" > /dev/null
42.       fi
43.       ps -ef | grep "$SSH_AGENT_PID" | grep -v grep | grep ssh-agent > /dev/null
44.       if [ $? -eq 0 ]; then
45.          test_identities
46.       else
47.          start_agent
48.       fi
49.    fi
50. }

原始文章：http://wooley.me/archives/589