cygwin Could not create directory '/home/Administrator/.ssh'

在cygwin下运行：

ssh-keygen -C "634772208@qq.com" -t rsa

时，出现如下错误：

cygwin Could not create directory '/home/Administrator/.ssh'

解决方案：

In addition to answer by diannal, if you don't have a passwd file under etc folder in Cygwin root folder, then you can first create one by issuing this command: 

mkpasswd -l -p "$(cygpath -H)" > /etc/passwd

运行以上命令就解决了

参考：

http://superuser.com/questions/517619/cygwin-cannot-create-ssh

https://peterreavy.wordpress.com/2012/05/22/fixing-could-not-create-directory-error-on-cygwin-ssh/