Sponsored Content
Top Forums UNIX for Beginners Questions & Answers Need some help regarding file transfer between server (sftp/scp) Post 303037348 by bakunin on Tuesday 30th of July 2019 08:18:10 AM
Old 07-30-2019
Quote:
Originally Posted by abhi_123
But in such a case, when we share a public key from server/system B to server/system A, this generally indicates that user from server B is transferring files to server A and not vice-versa.
No! It means that the authentication is done in this direction.

Consider it this way: if you give someone the key to your house he has access to it. That could mean he takes away something or brings something, but this difference is not depending on him receiving your key or not. He could do both these things without the key too, he just would have to ring your bell (and wait till you answer it) if he lacks the key.

If userA@systemA (notice that "userA" on one system and "userA" on another system are two different accounts, they just happen to share the same name) has his key on systemB this user is allowed to log on (without password). What he does after this logon is not determined by the key at all. He could put files (that is: transfer to the server) or get files (that is: copy files from that server).

This is also possible with classical ftp or sftp: there is the put/mput command to move files to the system and get/mget command to move/copy files from the system.

In scp this would look like:

Code:
scp user@system:/path/to/remotefile /path/to/localfile

This will transfer a remote file from "system" using the account "user" to the local system. The other way would be:

Code:
scp /path/to/localfile user@system:/path/to/remotefile

This would transfer a local file using the account "user" to the remote system "system". The difference between having put the key of your local user on "system" will be: without the key you need to authenticate, with the key you don't.

I hope this helps.

bakunin
 

10 More Discussions You Might Find Interesting

1. AIX

CRLF during SFTP transfer is appearing only in one server

Hello. I have got 3 unix boxes A B C. Box A is being used to prepare some reports. After the reports generation, Box A sftp the reports to Box B and Box C. When I look at the report in Box B and Box C. The reports are different. In Box B, I see using od -x command there is CRLF (\r\n) at the end... (7 Replies)
Discussion started by: panchpan
7 Replies

2. UNIX for Dummies Questions & Answers

File Missing When Grabbing Files from SFTP Server using SCP Command

Hi, I have this problem where sometimes my files would go missing when I schedule my crontab to run the SCP command to get file from the SFTP server. My crontab will run the scripts at an interval of 3 minutes (between the two scripts) The following is the setting in my crontab. ... (1 Reply)
Discussion started by: gingervitus
1 Replies

3. UNIX for Dummies Questions & Answers

scp or sftp to Window server

Dear Unix Gurus, I have a question to confirm before I proceed to script my program. I'm currently running on IBM AIX Ver 5.3. I just like to know if it's compatible to use scp or sftp between AIX and Wintel server? I'm trying to scp or sftp a file from AIX to Window server and I was... (1 Reply)
Discussion started by: lweegp
1 Replies

4. Shell Programming and Scripting

file transfer using scp..

Hi Frdz I have a problem like. I need to transfer a file from source to destination (different systems with different IPs) using "scp" command and before transfer the file i have to check the file is available in destination or not, if it is there no need to transfer, otherwise we have to... (5 Replies)
Discussion started by: KiranKumarKarre
5 Replies

5. UNIX for Dummies Questions & Answers

File transfer using SCP

I have a shell script which uses SCP command to transfer the files from one server to another server. The files are getting transferred successfully, but the problem is the files transferred to the destination server didnot have the permissions as that of the files on the source server. Command... (5 Replies)
Discussion started by: kumarm
5 Replies

6. Shell Programming and Scripting

SFTP to transfer files from one server to another

Hello, i have to write a script to perform sftp from the remote server to another server. the files which are at the remote location are huge data log files which should be transfered to my server in a particular folder. could you please provide me the general code (simple )... (1 Reply)
Discussion started by: urfrnddpk
1 Replies

7. Shell Programming and Scripting

Using SFTP and FTP to transfer data from One Remote Server To Another

HI I need to write a script in 415univ server which should go to 534unix server and move the files from there to windows server. I am not able to get it bcoz sftp prompt is not allowing ftp command. Can some one plz help me Thanks in advance (3 Replies)
Discussion started by: himakiran9
3 Replies

8. Shell Programming and Scripting

Transfer files from linux server to windows using secure ftp (sftp)

HI, I have to transfer files from linux server to windows using secure ftp (sftp) .Kindly help me out. (3 Replies)
Discussion started by: manushi88
3 Replies

9. UNIX for Advanced & Expert Users

SCP File Transfer

I have 3 AIX server namely - Server 1 , Server 2 and Server 3. And have done SCP setup between Server 1 and Server 2 so that i dont have to give password when i transfer file from Server 1 to Server 2 by setting public key between the server. Q1. If the unix password of the target server... (3 Replies)
Discussion started by: Pash
3 Replies

10. UNIX for Advanced & Expert Users

SCP File Transfer

On unix AIX server, when I am trying to transfer file from one directory to another directory on the same server through a program(where i call the script) it gives error "Lost Connection". (5 Replies)
Discussion started by: Pash
5 Replies
SENDFILE(1)						      General Commands Manual						       SENDFILE(1)

NAME
fetchfile - fetch file(s) via O-SAFT protocol SYNOPSIS
fetchfile [ -46lakdPriqQvVI ] [ -f user ] [ -s [user@]server ] [ -C[wr]=conffile ] filename fetchfile [ -lakdPriqQvVI ] [ -f user ] [ -s [user@]server ] [ -C[wr]=conffile ] -n filenumber DESCRIPTION
fetchfile fetches files from a SAFT server to the local user spool. In the SAFT server spool there must lay your sendfile public key to identify yourself. This key can be generated by the fetchfile -I com- mand and has to be transfered to the SAFT server at the very first time. This prevents other people to steal your files. You may list or fetch your files from the server. But remember, they are stored first in your local sendfile spool. You have to call receive to really receive them to your current directory. OPTIONS
-4, -6 Explicitly force IPv4 or IPv6 connections. By default, the program will try to resolve the name given, and choose the appropriate protocol automatically. If resolving a host name returns both IPv4 and IPv6 addresses, fetchfile will try to use the adresses in the order they are returned by the resolver. -l Only list the files on the server. -a Fetch all files. -k Keep files on server after fetching. -d Delete files without receiving. -n Specify the file number instead of the file name. -r Call receive automaticly afterwards. -f user Restrict file selection to this specifc user. -V Show version information and exit. -v Be verbose and show SAFT protocol messages. -P Send files to stdout directly. -i Ignore testing whether file has been already fetched. -q Quiet mode 1: print no transfer messages. -Q Quiet mode 2: print no transfer, information or warning messages. -I Initialize fetchfile and the pgp key pair. -s [user@]host Specify an alternate saft server and/or alternate user. -Cr=conffile Read configuration file "config" or "restrictions" from server. -Cw=conffile Write configuration file "config" or "restrictions" to server. ARGUMENTS
filename or filenumber Specify the name of the file or its number (with option -n). EXAMPLES
fetchfile -l fetchfile -a fetchfile -Cr=config -s saft.belwue.de FILES
/var/spool/sendfile/$USER/ Your local spool directory. $HOME/.sfspool/ Your local private spool directory if /var/spool/sendfile/$USER/ does not exist. config, restrictions Your configuration files for the server. See sendfile(1) for a description. SEE ALSO
receive(1), sendfile(1), fetchfile(7), sendfiled(8). AUTHOR
Ulli Horlacher - framstag@rus.uni-stuttgart.de 3rd Berkeley Distribution SENDFILE(1)
All times are GMT -4. The time now is 11:04 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy