如何追加到遠程服務器上的文件與pexpect

我試圖追加公鑰到遠程服務器上的授權密鑰文件與pexpect但它不工作。看起來，輸出到文件的重定向不會發生，儘管沒有錯誤。這裏是我的代碼：如何追加到遠程服務器上的文件與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 ==="

這裏是輸出：

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 ===

當我檢查遠程authorized_keys文件，新的密鑰不添加。 看來，密鑰被回顯到標準輸出而不是寫入文件。不知道如何解決這個問題。

來源

2017-09-27 Lidia

好像你忘了刪除尾隨\n字符local_public_key。所以試試這樣：

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

來源

2017-09-27 07:22:33 pynexj

這就是它......傻我！ ;-)謝謝你指出這一點。 – Lidia

如何追加到遠程服務器上的文件與pexpect

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