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I wanna transfer a big file (1.3G) from remote server to my server via sftp/ftp in bash script (not in separated commands).

Just for instance: my server IP is 10.10.10.1 and remote server is 10.10.10.2 I connect to remote server with sftp root/123456 (user + pass).

Let me know for more information.

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  • What have you tried? Also, allowing remote login to root isn’t considered best practice. Commented Apr 11, 2019 at 6:29
  • #!/bin/bash file=$(ls -ltr | tail -1) if [ -f $file ] ; then scp [[root@]172.17.170.133:]drive_d/AlphaVersion/NotOfficialVersions/Windows/ [[root@]172.17.233.227:]/root fi I tried that script but while running it asked me to enter a password...I want to enter password inside script...Is it possible? Commented Apr 11, 2019 at 6:33
  • You can use SSH keys to not have to enter a password when running the script. Otherwise, you would probably need to use something like expect. Commented Apr 11, 2019 at 6:37

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sftp can read commands from either standard input or from a "batch file".

For example, to get a file from the remote host, you would use the get command:

echo 'get /path/to/file' | sftp [email protected]

Or, you could use a here-document to pass the command(s) to sftp:

sftp [email protected] <<'END'
get /path/to/file
END

Or you could have the same get command in a file that you refer to with the -b command line option of sftp:

sftp -b somefile [email protected]

The file or files that you transfer to the local system would be put into the current directory (unless this is changed with lcd, "local cd", in the commands that you send to sftp).

To connect without having to give a password, arrange with public and private SSH keys as described in "How to make the script automated to take password on its own?". Note that a remote system may well have disabled SSH access for the root user (this is a sane way to configure an SSH server).

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  • I wanna do it with bash script not via commands and without asking me for a password. Commented Apr 11, 2019 at 7:57
  • @ShalevSason This is what I have shown. You would put the command in a script and run it with bash. The link at the end of my answer points to a question regarding setting up SSH with password-less access. Commented Apr 11, 2019 at 7:58
  • but after run this command Linux asked me for sftp password....How can I insert the password to the script? Commented Apr 11, 2019 at 8:01
  • @ShalevSason You would follow the advice in the answers to the other question that I linked to at the end of my answer, or read any of the countless other questions about the same thing. Commented Apr 11, 2019 at 8:03
  • Great! I've managed to do it. BTW - do you know how to get the last updated file from folder? I mean what to add to "get" commands that will give me only the latest file from a folder? Commented Apr 11, 2019 at 8:10

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