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If permissions 0644 for ‘/ root /. SSH / ID appears_ It is OK to reduce the permission to 0600

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Today, in the push project to the code cloud, we found an error, and the key word of the prompt message was “permissions 0644…”. We forgot to take a screen capture. We found a blog under Baidu and solved it. The permission setting is too large. Recently, we don’t know why. The administrator’s permission of Mac was damaged. When installing WPS, we couldn’t open it after installation. We contacted WPS support and sent the log to them. In response, we said that sudo is invalid and the permission of. Sudo file is too large, Sudo returned to normal

If permissions 0644 for ‘/ root /. SSH/ID appears_ The error such as rsa’are too open. It turns out that you only need to lower the permission to 0600 to enter the command

chmod 0600 /root/.ssh/id_ rsa

Transferred from: http://www.cppblog.com/gezidan/archive/2011/08/19/153826.html