如何追加到远程服务器上的文件与pexpect

我试图追加公钥到远程服务器上的授权密钥文件与pexpect但它不工作。看起来，输出到文件的重定向不会发生，尽管没有错误。这里是我的代码：如何追加到远程服务器上的文件与pexpect

print "DEGUG: === append to authorized keys START ===" 
print "DEBUG: sending echo <local public key> >> /root/.ssh/authorized_keys" 
print "  local public key: " + local_public_key 
child.sendline('echo ' + local_public_key + ' >> /root/.ssh/authorized_keys') 
child.expect(prompt) 
child.expect(prompt) 
child.sendline('echo $?') 
child.expect(prompt) 
ec = child.before.strip() 
print("exit code: >>>>" + str(ec) + "<<<<") 
print "DEGUG: === append to authorized keys END ==="

这里是输出：

DEGUG: === append to authorized keys START === 
DEBUG: sending echo <local public key> >> /root/.ssh/authorized_keys 
    local public key: ssh-rsa 
AAAAB3NzaC1yc2EAAAABIwAAAQEAy408yT80SP2x9rZkR56j4wsbpqUSYOW1uY8Lf4XfJLinbtcpwyyYGJCuNbA30ve1+Lt/AJ2d1VdSAS4Afu1LKucFmj2lN8dqKWsCUBYXXtkUHILVelRTglMGFLTbLJofXYwUXA60UWWilYvWJ2j4HRjHgxUP7i0fYy4ruy5zpspZ8Svr+PMY9UjA3HSnPhFB2ZHkC+9kzexfVCM7nvKw9LekxY0x/BrD5z6D+652sr8A9EOgBsg9A/soL4JMycdWmTBDe16O5f4Db5Qt7oqn3Hbw7lki1XULIvTzyNhUtoiGiQiCbCh7G1ba+IccvfrIaK+kpmugeoaTC4zldXEGbw== 

echo ssh-rsa 
AAAAB3NzaC1yc2EAAAABIwAAAQEAy408yT80SP2x9rZkR56j4wsbpqUSYOW1uY8Lf4XfJLinbtcpwyyYGJCuNbA30ve1+Lt/AJ2d1VdSAS4Afu1LKucFmj2lN8dqKWsCUBYXXtkUHILVelRTglMGFLTbLJofXYwUXA60UWWilYvWJ2j4HRjHgxUP7i0fYy4ruy5zpspZ8Svr+PMY9UjA3HSnPhFB2ZHkC+9kzexfVCM7nvKw9LekxY0x/BrD5z6D+652sr8A9EOgBsg9A/soL4JMycdWmTBDe16O5f4Db5Qt7oqn3Hbw7lki1XULIvTzyNhUtoiGiQiCbCh7G1ba+IccvfrIaK+kpmugeoaTC4zldXEGbw== 
>> /root/.ssh/authorized_keys 
R56j4wsbpqUSYOW1uY8Lf4XfJLinbtcpwyyYGJCuNbA30ve1+Lt/AJ2d1VdSAS4Afu1LKucFmj2lN8dqKWsCUBYXXtkUHILVelRTglMGFLTbLJofXYwUXA60UWWilYvWJ2j4HRjHgxUP7i0fYy4ruy5zpspZ8Svr+PMY9UjA3HSnPhFB2ZHkC+9kzexfVCM7nvKw9LekxY0x/BrD5z6D+652sr8A9EOgBsg9A/soL4JMycdWmTBDe16O5f4Db5Qt7oqn3Hbw7lki1XULIvTzyNhUtoiGiQiCbCh7G1ba+IccvfrIaK+kpmugeoaTC4zldXEGbw== 
ssh-rsa 
AAAAB3NzaC1yc2EAAAABIwAAAQEAy408yT80SP2x9rZkR56j4wsbpqUSYOW1uY8Lf4XfJLinbtcpwyyYGJCuNbA30ve1+Lt/AJ2d1VdSAS4Afu1LKucFmj2lN8dqKWsCUBYXXtkUHILVelRTglMGFLTbLJofXYwUXA60UWWilYvWJ2j4HRjHgxUP7i0fYy4ruy5zpspZ8Svr+PMY9UjA3HSnPhFB2ZHkC+9kzexfVCM7nvKw9LekxY0x/BrD5z6D+652sr8A9EOgBsg9A/soL4JMycdWmTBDe16O5f4Db5Qt7oqn3Hbw7lki1XULIvTzyNhUtoiGiQiCbCh7G1ba+IccvfrIaK+kpmugeoaTC4zldXEGbw== 
[[email protected] ~]# >> /root/.ssh/authorized_keys 
[[email protected] ~]# echo $? 
echo $? 
0 
[[email protected] ~]# exit code: >>>>echo $? 
0 
[[email protected] ~]<<<< 
DEGUG: === append to authorized keys END ===

当我检查远程authorized_keys文件，新的密钥不添加。 看来，密钥被回显到标准输出而不是写入文件。不知道如何解决这个问题。

来源

2017-09-27 Lidia

好像你忘了删除尾随\n字符local_public_key。所以试试这样：

child.sendline('echo ' + local_public_key.strip() + ' >> /root/.ssh/authorized_keys') 
#          ^^^^^^^^

来源

2017-09-27 07:22:33 pynexj

这就是它......傻我！ ;-)谢谢你指出这一点。 – Lidia

如何追加到远程服务器上的文件与pexpect

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