Send password when using scp to copy files from one server to another

Question

using scp to copy files from 1 unix server to another regularly and performing certain actions  to do this quickly I wish to use a unix script which does the scp and inputs the password required to complete the scp   I have tried the expect command to send the password throught the unix command line however unable to achieve this so far   sample commands  scp   abc txt hostname abc txt expect   password    send  mypassword r    I get these errors   couldn t read file  password     no such file or directory myscript sh 5   send  not found  No such file or directory    am I missing something

User · Answer

copy  tmp abc txt to  tmp abc txt  target path      username and password of 10 1 1 2 is  username  and  password   sshpass -p  password  scp  tmp abc txt username 10 1 1 2  tmp abc txt      install sshpass  ubuntu   sudo apt-get install sshpass

User · Answer

Here is how I resolved it   It is not the most secure way however it solved my problem as security was not an issue on internal servers   Create a new file say password txt and store the password for the server where the file will be pasted  Save this to a location on the host server   scp -W location password txt copy file location paste file location   Cheers

User · Answer

You should use better authentication with open keys  In these case you need no password and no expect   If you want it with expect  use this script  see answer Automate scp file transfer using a shell script        usr bin expect -f    connect via scp     spawn scp  user example com  home santhosh file dmp   u01 dumps file dmp                         expect   -re    es  o          exp send  yes r      exp continue   -re    sword          exp send  PASSWORD r      interact   Also  you can use pexpect  python module    def doScp user password  host  path  files    fNames       join files   print fNames  child   pexpect spawn  scp  s  s  s  s     fNames  user  host path    print  scp  s  s  s  s     fNames  user  host path      i   child expect   assword    r yes no    timeout 30      if i    0          child sendline password      elif i    1          child sendline  yes           child expect  assword    timeout 30          child sendline password      data   child read       print data     child close

User · Answer

Firts as mentioned by David  we need to set up public private key   Then using below command had worked for me  means it didn t prompt me for password as we are passing private key in the command using -i option  scp -i path to private key path to local file remoteUserId remoteHost  path to remote folder   Here path to private key is private key file which we generated while setting up public private key

User · Answer

Just pass with sshpass -p  your password  at the beginning of your scp command   sshpass -p  your password  scp   abc txt hostname abc txt

User · Answer

One of the ways to get around login issues with ssh  scp  and sftp  all use the same protocol and sshd server  is to create public private key pairings  Some servers may disallow this  but most sites don t  These directions are for Unix Linux Mac  As always  Windows is a wee bit different although the cygwin environment on Windows does follow these steps   On your machine  create your public private key using ssh-keygen  This can vary from system to system  but the program should lead you through this  When ssh-keygen is finished  you will have a  HOME  ssh directory on your machine  This directory will contain a public key and a private key  There will be two more files that are generated as you go along  One is known hosts which contains the fingerprints of all known hosts you ve logged into  The second will be called either authorized keys or authorized keys2 depending upon your implementation  If it s not there already  log into the remote host  and run ssh-keygen there too  This will generate a  HOME  ssh directory there as well as a private public key pair  Don t do this if the  HOME  ssh directory already exists and has a public and private key file  You don t want to regenerate it  On the remote server in the  HOME  ssh directory  create a file called authorized keys  In this file  put your public key  This public key is found on your  HOME  ssh directory on your local machine  It will end with   pub  Paste the contents of that into authorized keys  If authorized keys already exists  paste your public key in the next line   Now  when you log in using ssh  or you use scp or sftp  you will not be required to enter a password  By the way  the user IDs on the two machines do not have to agree  I ve logged into many remote servers as a different user and setup my public key in authorized keys and have no problems logging directly into that user  Doing Private Public Key Authentication on Windows If you use Windows  you will need something that can do ssh  Most people I know  use PuTTY which can generate public private keys  and do the key pairing when you login remotely  I can t remember all of the steps  but you generate two files  one contains the public key  one contains the private key   and configure PuTTY to use both of those when logging into a remote site  If that remote site is Linux Unix Mac  you can copy your public key and put it into the authorized keys file  If you can use SSH Public Private keys  you can eliminate the need for passwords in your scripts  Otherwise  you will have to use something like Expect or Perl with Net  SSH which can watch the remote host and enter the password when prompted

[bash] Send password when using scp to copy files from one server to another

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