Linux ssh从bash脚本添加并自动输入密码短语

我正在尝试从脚本添加ssh（目前不关心安全性）

现在ssh会提示输入密码短语，这需要自动化，所以我读了一些东西，比如和find

现在我做以下几点：

eval `ssh-agent -s`

脚本tmp.sh定义为：

#!/usr/bin/expect
spawn ssh-add /root/.ssh/id_rsa
expect "Enter passphrase for /root/.ssh/id_rsa:"
send "my_pass"
interact

/tmp.sh

ssh添加-l

如果ssh-add能够工作，它会显示如下内容

4096 SHA256:wlfP/nhVSWXLcljBOen5GSYZXJGgfi/XJWFZBWQRSM id_rsa（rsa）

但是我得到的是

代理没有身份。

似乎ssh代理失去了它的上下文

---

我对其他解决方案持开放态度。

更新，因为第一个解决方案不起作用

我没有尝试过这一点，但如果expect确实失去了上下文，那么稍后设置它可能是一个好主意：

auto-passphrase-add.expect（替换tmp.sh）

ssh-agent-ssh-add.sh

#!/bin/sh
eval `ssh-agent -s`
ssh-add "$@"

---

就我个人而言，我觉得expect的使用有点麻烦。以下方法提供了大量信息

因此，如果您的

ssh add

版本允许

-p

参数，并且您不担心安全性，那么这应该可以工作：

当我测试我称之为“j”的脚本时，请参见以下内容：

$ cd /tmp
$ ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/home/me/.ssh/id_rsa): /tmp/id_rsa
Enter passphrase (empty for no passphrase): asdfasdf
Enter same passphrase again: asdfasdf
Your identification has been saved in /tmp/id_rsa.
Your public key has been saved in /tmp/id_rsa.pub.
The key fingerprint is:
ed:1a:ae:c7:ac:47:5e:31:98:8e:18:8f:1c:67:94:6d jimconn@redapt-240
The key's randomart image is:
+--[ RSA 2048]----+
|       o         |
|      o E        |
|     . . o       |
|    o o o.o      |
|   . O oS .o     |
|    + o o..      |
|       =...      |
|       .*o       |
|      o=o        |
+-----------------+
$ echo 'asdfasdf' > ~/.myscrt
$ chmod 0600 ~/.myscrt
$ ls -altr ~/.myscrt
-rw------- 1 me me 9 Feb 16 19:00 /home/me/.myscrt
$ cat ~/.myscrt
asdfasdf
$ ls -ltr
total 12
-rw-r--r-- 1 me me  400 Feb 16 18:59 id_rsa.pub
-rw------- 1 me me 1766 Feb 16 18:59 id_rsa
-rwx------ 1 me me  151 Feb 16 19:04 j
$ cat j
#!/bin/bash
PASS="$(<$HOME/.myscrt)"
install -vm700 <(echo "echo $PASS") "$PWD/ps.sh"
cat id_rsa | SSH_ASKPASS="$PWD/ps.sh" ssh-add - && shred -n3 -uz     $PWD/ps.sh
$ ./j
‘/dev/fd/63’ -> ‘/tmp/so/ps.sh’
Identity added: (stdin) ((stdin))
$ ls
id_rsa  id_rsa.pub  j

---

您是否运行了

eval`ssh-agent-s`

或

eval'ssh-agent-s'

？我运行了eval`ssh-agent-s`，但由于格式问题，我希望能够这样说如果您不关心安全性，并且愿意将密码短语存储在文件中，那么您最好完全从密钥中删除密码短语。仍然需要“\n”，这是我尝试做的第一件事，有时提示输入密码的程序无法从常规标准输入中读取密码，需要有一个模拟TTY。这可能不是“expect”的默认行为，但我认为它可以选择模仿TTY。让我们看一下手册页，看看是否有这样的选项。我在一个小贴士中试试看，代理pid 37 spawn SSH_AUTH_SOCK=/tmp/SSH-Zmv2bGZUfCKp/Agent.36 SSH_Agent_pid=37 SSH add/root/.SSH/id_rsa无法执行“SSH_AUTH_SOCK=/tmp/SSH-zmv2bzufckp/Agent.36”：执行时没有这样的文件或目录“spawn SSH_AUTH_SOCK=/tmp/SSH-Zmv2bGZUfCKp/agent.36 SSH_agent_PID=37 SSH add/root/.SSH/id_rsa”您可以尝试第二种方法吗？是的，让我在docker中尝试一下，这可能是docker构建问题，可能需要更长的时间

#!/bin/bash
# store a file somewheres with your passphrase. For example's sake
# I'll just use $HOME/.myscrt

<$HOME/.myscrt ssh-add -p ~/.ssh/id_rsa

#!/bin/bash
# Same passfile and some minor enhancements from the OP of the linked
# solution
PASS="$(<$HOME/.myscrt)"

# the following is just a one-liner method of making an executable
# one-line script echoing the password to STDOUT
install -vm700 <(echo "echo $PASS") "$PWD/ps.sh"

# then the magic happens. NOTE: your DISPLAY variable should be set
# for this method to work (see ssh-add(1))
[[ -z "$DISPLAY" ]] && export DISPLAY=:0
< id_rsa SSH_ASKPASS="$PWD/ps.sh" ssh-add - && shred -n3 -uz  $PWD/ps.sh    

$ cd /tmp
$ ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/home/me/.ssh/id_rsa): /tmp/id_rsa
Enter passphrase (empty for no passphrase): asdfasdf
Enter same passphrase again: asdfasdf
Your identification has been saved in /tmp/id_rsa.
Your public key has been saved in /tmp/id_rsa.pub.
The key fingerprint is:
ed:1a:ae:c7:ac:47:5e:31:98:8e:18:8f:1c:67:94:6d jimconn@redapt-240
The key's randomart image is:
+--[ RSA 2048]----+
|       o         |
|      o E        |
|     . . o       |
|    o o o.o      |
|   . O oS .o     |
|    + o o..      |
|       =...      |
|       .*o       |
|      o=o        |
+-----------------+
$ echo 'asdfasdf' > ~/.myscrt
$ chmod 0600 ~/.myscrt
$ ls -altr ~/.myscrt
-rw------- 1 me me 9 Feb 16 19:00 /home/me/.myscrt
$ cat ~/.myscrt
asdfasdf
$ ls -ltr
total 12
-rw-r--r-- 1 me me  400 Feb 16 18:59 id_rsa.pub
-rw------- 1 me me 1766 Feb 16 18:59 id_rsa
-rwx------ 1 me me  151 Feb 16 19:04 j
$ cat j
#!/bin/bash
PASS="$(<$HOME/.myscrt)"
install -vm700 <(echo "echo $PASS") "$PWD/ps.sh"
cat id_rsa | SSH_ASKPASS="$PWD/ps.sh" ssh-add - && shred -n3 -uz     $PWD/ps.sh
$ ./j
‘/dev/fd/63’ -> ‘/tmp/so/ps.sh’
Identity added: (stdin) ((stdin))
$ ls
id_rsa  id_rsa.pub  j

$ ssh-add -D
All identities removed.
$ ssh-add -l
2048 ed:1a:ae:c7:ac:47:5e:31:98:8e:18:8f:1c:67:94:6d (stdin) (RSA)
$ ./j
‘/dev/fd/63’ -> ‘/tmp/so/ps.sh’
Identity added: (stdin) ((stdin))
$ ssh-add -l
2048 ed:1a:ae:c7:ac:47:5e:31:98:8e:18:8f:1c:67:94:6d (stdin) (RSA)