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Full Discussion: Cat a file across ssh?
Top Forums Shell Programming and Scripting Cat a file across ssh? Post 302769480 by jnojr on Tuesday 12th of February 2013 12:23:10 PM
Old 02-12-2013
Question Cat a file across ssh?

There is a file on a remote host that I want to read across an ssh tunnel. NOT copy... scp won't work here. And this file requires elevated permissions to read.

'ssh -t remotehost sudo cat /path/to/file' will prompt me for my sudo password and read out the file. But I'm coming up blank for a way to capture that output. I really just need to grep and cut and sed my way through the output, so it doesn't matter how the content is available locally... writing to a temporary file is fine, or just streaming it across. But requiring the password to be entered puts the kybosh on every way of piping or redirecting the output I can think of. I can probably use a tar pipe to get it across, but it seems there ought to be an easier way to do this.
 

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SSH-COPY-ID(1)						    BSD General Commands Manual 					    SSH-COPY-ID(1)

NAME
ssh-copy-id -- copy public keys to a remote host SYNOPSIS
ssh-copy-id [-lv] [-i keyfile] [-o option] [-p port] [user@]hostname DESCRIPTION
The ssh-copy-id utility copies public keys to a remote host's ~/.ssh/authorized_keys file (creating the file and directory, if required). The following options are available: -i file Copy the public key contained in file. This option can be specified multiple times and can be combined with the -l option. If a private key is specified and a public key is found then the public key will be used. -l Copy the keys currently held by ssh-agent(1). This is the default if the -i option was not specified. -o ssh-option Pass this option directly to ssh(1). This option can be specified multiple times. -p port Connect to the specified port on the remote host instead of the default. -v Pass -v to ssh(1). The remaining arguments are a list of remote hosts to connect to, each one optionally qualified by a user name. EXIT STATUS
The ssh-copy-id utility exits 0 on success, and >0 if an error occurs. EXAMPLES
To send a specific key to multiple hosts: $ ssh-copy-id -i /path/to/keyfile.pub user@host1 user@host2 user@host3 HISTORY
The ssh-copy-id utility was written by Eitan Adler <eadler@FreeBSD.org> as a drop-in replacement for an existing utility included with OpenSSH. BSD
February 28, 2014 BSD
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