1.ssh登錄 The authenticity of host 192.168.0.xxx can't be established. 的問題
用ssh登錄一個機器（換過ip地址），提示輸入yes后，屏幕不斷出現(xiàn)y，只有按ctrl + c結(jié)束
錯誤是：The authenticity of host 192.168.0.xxx can't be established.
以前和同事碰到過這個問題，解決了，沒有記錄，這次又碰到了不知道怎么處理，還好有QQ聊天記錄，查找到一下，找到解決方案：
執(zhí)行ssh? -o StrictHostKeyChecking=no? 192.168.0.xxx 就OK
網(wǎng)址是：
http://blog.ossxp.com/2010/04/1026/
記一下，防止又忘記了，又快到3點了，無數(shù)個不眠之夜啊。
2011/10/11
某天機器又改IP了，ssh后，報：
mmt@FS01:~$ ssh? -o StrictHostKeyChecking=no? 192.168.0.130
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@? ? WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!? ? @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
fe:d6:f8:59:03:a5:de:e8:29:ef:3b:26:6e:3d:1d:4b.
Please contact your system administrator.
Add correct host key in /home/mmt/.ssh/known_hosts to get rid of this message.
Offending key in /home/mmt/.ssh/known_hosts:38
Password authentication is disabled to avoid man-in-the-middle attacks.
Keyboard-interactive authentication is disabled to avoid man-in-the-middle attacks.
Permission denied (publickey,password).
注意這句
Add correct host key in /home/mmt/.ssh/known_hosts to get rid of this message.
執(zhí)行：
mv? /home/mmt/.ssh/known_hosts known_hosts.bak
再連：
ssh? -o StrictHostKeyChecking=no? 192.168.0.130
OK了!
2.xcrun: error: active developer path ("/Applications/Xcode.app/Contents/Developer/") does not exist, use `xcode-select --switch path/to/Xcode.app` to specify the Xcode that you wish to use for command line developer tools (or see `man xcode-select`)
這個的原因，是因為更新了xcode軟件，在更新svn時，找不到這個軟件，導(dǎo)致的。
解決辦法就是：將Xcode的路徑，重新設(shè)置一下。
sudo xcode-select --switch “Xcode的path，直接在應(yīng)用程序里面找到Xcode，拖拽到這里”
