Getting hostname using ssh Post: 302535377

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Top Forums Shell Programming and Scripting Getting hostname using ssh Post 302535377 by Corona688 on Thursday 30th of June 2011 01:23:02 PM

06-30-2011

Registered User

Quote:

Originally Posted by eponcedeleonc

that is not what i want to do...

I know the name and format of the file

No you don't. You know the server knows, but scp doesn't run commands on the server so it can't figure out what `hostname` means. It can't do that because scp is not a shell.

Quote:

i need scp because I am copying that file from the remote server to my local server, that is why I am using scp.

You can copy a file with ssh, using the trick I showed you. cat will spew the file to standard output on the remote host -- which goes into the ssh connection. Travelling across the ssh connection, it returns to your local machine -- where you can redirect it into a local file. This works fine even for binary files.

Code:

ssh username@host 'cat /path/to/remote/file' > /path/to/local/file

You can also do more elaborate piping to transfer multiple files with permissions:

Code:

ssh username@host 'tar -cf - /path/to/remote/files' | tar -xf - -C /path/to/local/dir/

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LEARN ABOUT PLAN9

ssh-argv0

SSH-ARGV0(1)                                                BSD General Commands Manual                                               SSH-ARGV0(1)

NAME

     ssh-argv0 -- replaces the old ssh command-name as hostname handling

SYNOPSIS

     hostname | user@hostname [-l login_name] [command]

     hostname | user@hostname [-afgknqstvxACNTX1246] [-b bind_address] [-c cipher_spec] [-e escape_char] [-i identity_file] [-l login_name]
     [-m mac_spec] [-o option] [-p port] [-F configfile] [-L port:host:hostport] [-R port:host:hostport] [-D port] [command]

DESCRIPTION

     ssh-argv0 replaces the old ssh command-name as hostname handling.  If you link to this script with a hostname then executing the link is
     equivalent to having executed ssh with that hostname as an argument.  All other arguments are passed to ssh and will be processed normally.

OPTIONS

     See ssh(1).

FILES

     See ssh(1).

AUTHORS

     OpenSSH is a derivative of the original and free ssh 1.2.12 release by Tatu Ylonen.  Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos,
     Theo de Raadt and Dug Song removed many bugs, re-added newer features and created OpenSSH.  Markus Friedl contributed the support for SSH
     protocol versions 1.5 and 2.0.  Jonathan Amery wrote this ssh-argv0 script and the associated documentation.

SEE ALSO

     ssh(1)

Debian Project                                                   September 7, 2001                                                  Debian Project

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