This can be useful if keeping the file properties unchanged is desired:. The -r flag can be used to recursively copy a folder and its contents instead of a single file:. The -q flag supresses the progress meter and non-error messages so your terminal stays clean:. Notice that the second command we ran in this example, the transfer percentage is not displayed due to the -q flag. The -i flag can be used to authenticate the connection using a cryptographic keypair stored in a file instead of a username and password.
This is common practice for authenticating against remote cloud servers, like those in AWS or Digital Ocean. Flags can be used with each other as well. Here is an example that implements multiple flags to copy a folder from a remote host to our local machine using a keypair file for authentication on port 44 , while preserving file properties and supressing output:.
In this article, we discussed SCP, a protocol which can be used to conveniently transfer files between hosts. We covered transferring files from the local host to a remote host, from a remote host to the local host, and between two remote hosts.
This article was written by Jacob Stopak, a software developer and consultant with passion for helping others improve their lives through code. Jacob is the author of the Coding Essentials Guidebook for Developers , an introductory book that covers essential coding concepts and tools. Steve says:.
February 20, at pm. Bela says:. November 10, at pm. July 19, at pm. Rob says:. November 8, at am. Leave a Reply Click here to cancel reply. Beta 2 of iOS Shop on Amazon. Now run the following pssh command by specifying hosts. To run commands on multiple servers, add the servers to a hosts file as explained before. Then run pdsh as shown; the flag -w is used to specify the hosts file, and -R is used to specify the remote command module available remote command modules include ssh, rsh, exec, the default is rsh.
To run multiple commands in a single step from the shell, you can type them on one line and separate them with semicolons. This is a Bash script!! The pwd command runs first, displaying the current working directory, then the whoami command runs to show the currently logged in users. It specialties includes: Sending input to all of the processes.
Inputting a password to ssh. Saving output to files. In the specific case where all the files have the same extension but with different suffix say number of log file you use the following:. With this, you can write your scripts without worring about authentication. Simple as that. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 8 years, 5 months ago. Active 1 month ago. Viewed k times. When I made a script, I had to put password for each command. Can I avoid it?
I would suggest that you have a look at rsync , maybe it can help you in this case and many upcoming cases. Example based on JohnMudd 's answer: scp root Add a comment. Active Oldest Votes. The first command omitted an ending ".
Beware: no spaces after the commas within the curly braces. I just spent 10 minutes trying to figure out why my command was not working and it was because of spaces. Show 7 more comments. From local to server: scp file1. This should be the answer on top, since the server doesn't ask for the password for each file : — motagirl2.
Not working on client on Ubuntu 18 zsh. Not sure where this should work.
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