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Full Discussion: ssh and redirection
Top Forums Shell Programming and Scripting ssh and redirection Post 302562258 by Corona688 on Thursday 6th of October 2011 11:14:22 AM
Old 10-06-2011
Putting that in quotes instead of quote tags means when I try and quote you, the error message disappears. Use code tags for code.

"no askpass program" means it needs to ask you for a password and can't because it's not in a terminal. Run it in a terminal.

---------- Post updated at 09:12 AM ---------- Previous update was at 09:11 AM ----------

Quote:
Originally Posted by ygemici
where is redirection sign?
Code:
# ssh -t newuser@server  "sudo -u user1 echo -n > /var/spool/mail/user1"

This won't work, again, because the redirection happens before the sudo. The shell doesn't have permissions to overwrite the file, and will fail to redirect into it.

---------- Post updated at 09:14 AM ---------- Previous update was at 09:12 AM ----------

Perhaps:

Code:
ssh -t newuser@server echo "': > /var/spool/mail/user1'" '|' sudo -u user1 /bin/sh

 

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RSH(1)							      General Commands Manual							    RSH(1)

NAME
rsh - remote shell SYNOPSIS
rsh [-n] [-l username] host [command] host [-n] [-l username] [command] DESCRIPTION
Rsh connects to the specified host, and executes the specified command. Rsh copies its standard input to the remote command, the standard output of the remote command to its standard output, and the standard error of the remote command to its standard error. Interrupt, quit and terminate signals are propagated to the remote command; rsh normally terminates when the remote command does. The remote username used is the same as your local username, unless you specify a different remote name with the -l option. This remote name must be equivalent (in the sense of rlogin(1)) to the originating account; no provision is made for specifying a password with a com- mand. If you omit command, then instead of executing a single command, you will be logged in on the remote host using rlogin(1). Shell metacharacters which are not quoted are interpreted on local machine, while quoted metacharacters are interpreted on the remote machine. Thus the command rsh otherhost cat remotefile >> localfile appends the remote file remotefile to the localfile localfile, while rsh otherhost cat remotefile ">>" otherremotefile appends remotefile to otherremotefile. OPTIONS
-l username Specify the remote user name. -n Connect standard input of the remote command to /dev/null. Do this if rsh should not inadvertently read from standard input. SEE ALSO
rcp(1), rlogin(1), rhosts(5). BUGS
You cannot run an interactive command (like rogue(6) or vi(1)); use rlogin(1). 4.2 Berkeley Distribution April 29, 1985 RSH(1)
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