Spawn command not found

问题:

I have an error trying to run a .sh file

 line 2: spawn: command not found ": no such file or directory bash.sh: line 3: expect: command not found bash.sh: line 4: send: command not found 

#!/usr/bin/expect -f spawn sftp -o IdentityFile=MyFile.ppk 500200243@XXX.XXX.XXX.XXX expect "XXX.XXX.XXX.XXX.gatewayEnter passphrase for key 'MyFile.ppk.ppk':" send "myPassword" 

Any idea why it happens?

回答1:

It works OK for me (error from sftp: ssh: Could not resolve hostname XXX.XXX.XXX.XXX: Name or service not known), though the .sh extension for an expect (tcl) script is a little off-putting ;-)

Often when this sort of unexplainable/unpredictable behavior happens, it is because the script was edited under windows (notepad.exe), which uses \r\n to delimit lines. This plays havoc with unix/linux scripts, as only \n is expected as a line delimiter.

You can use the dos2unix and unix2dos utilities to convert between the two formats. As an experiment, I converted your script to "dos" format, and sure enough got a similar error:

ubuntu@ubuntu:~$ unix2dos bash.sh  unix2dos: converting file bash.sh to DOS format ... ubuntu@ubuntu:~$ ./bash.sh  ": no such file or directory ubuntu@ubuntu:~$ dos2unix bash.sh  dos2unix: converting file bash.sh to Unix format ... ubuntu@ubuntu:~$ ./bash.sh  spawn sftp -o IdentityFile=MyFile.ppk 500200243@XXX.XXX.XXX.XXX ssh: Could not resolve hostname XXX.XXX.XXX.XXX: Name or service not known Couldn't read packet: Connection reset by peer send: spawn id exp6 not open     while executing "send "myPassword""     (file "./bash.sh" line 4) ubuntu@ubuntu:~$  

回答2:

1. that is an expect script, so ".exp" would be an appropriate file extension: mv bash.sh sftp.exp
2. do not launch it like bash bash.sh or sh bash.sh. Do this:
   1. make the program executable: chmod a+x sftp.exp
   2. launch it with ./sftp.exp or /path/to/sftp.exp or move it to a directory in your $PATH and launch it just with sftp.exp
3. after you send "myPassword" you have to "hit enter": send "myPassword\r"
4. while developing an expect program, add exp_internal 1 to the top.

Good luck, and come back with further questions.

回答3:

It seems /usr/bin/expect haven't been installed in your machine. So you will get 'command not found'

Use which expect to check, and install it to correct path.

回答4:

It all depends on how you invoke the command. Like ray said, even if you specify the environment with a bang at the top, you still have to run it using expect -f.

回答5:

I was also getting the same error. it got resolved by using expect in following way:

DIRNAME=$(date +%F:%T) expect_sh=$(expect -c " spawn scp -r ABC xxx@yyy.yy.yy.yyy:/root/$DIRNAME expect \"password:\" send \"xxxx\r\" expect \"#\" spawn ssh -o StrictHostKeychecking=no xxx@yyy.yy.yy.yyy expect \"password:\"< send \"xxxx\r\" expect \"#\" send \"rm -f /root/$DIRNAME/abc.txt\r\" expect \"#\" send \"scp -r /root/$DIRNAME/* root@zzz.zz.zz.zzz:/root/ABC/\r\" expect \"password:\" send \"xxxxx\r\" expect \"#\" send \"exit \r\" ")<b  echo "$expect_sh" 

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