ssh 免密码登录，需要使用公私钥来认证@import url(http://www.blogjava.net/CuteSoft_Client/CuteEditor/Load.ashx?type=style&file=SyntaxHighlighter.css);@import url(/css/cuteeditor.css);
首先通过 ssh-keygen 生成一对公私钥，默认在 ~/.ssh/id_rsa.pub 和 ~/.ssh/id_rsa，前面的是公钥。
认证就是要把这个文件加到远程用户目录 ~/.ssh/authorized_keys 文件中，而且这个文件的权限不能被其它人访问。
下面的脚本能够自动把这个文件放到远程，方法是 ./addpk ip username password
#!//usr/bin/expect
set host [lrange $argv 0 0]
set user [lrange $argv 1 1]
set passwd [lrange $argv 2 2]
proc ssh {cmd} {
global user host passwd
spawn ssh $user@$host "$cmd"
expect {
"*conne*" {
send "yes\n"
expect "*password*"
send "$passwd\n"
expect eof
}
"*password*" {
send "$passwd\n"
expect eof
}
}
}
proc scp {src dest} {
global user host passwd
spawn scp $src $user@$host:$dest
expect {
"*conne*" {
send "yes\n"
expect "*password*"
send "$passwd\n"
expect eof
}
"*password*" {
send "$passwd\n"
expect eof
}
}
}
ssh "mkdir -p ~/.ssh"
scp "/home/user1/.ssh/id_rsa.pub" "~/.ssh/id_rsa.pub"
ssh "cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys"
ssh "uniq ~/.ssh/authorized_keys > ~/.ssh/authorized_keys.tmp"
ssh "mv ~/.ssh/authorized_keys.tmp ~/.ssh/authorized_keys"
ssh "chmod 700 ~/.ssh"
ssh "chmod 600 ~/.ssh/*"
posted on 2012-05-08 09:38
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