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Full Discussion: Ssh on ping result?
Top Forums Shell Programming and Scripting Ssh on ping result? Post 303026493 by Corona688 on Wednesday 28th of November 2018 04:29:20 PM
Old 11-28-2018
It wouldn't even work locally. Go ahead and try it, see what happens. su will run, and cd will not run inside it - but it will run, after su quits, because that's what semicolon means. Run this command, wait for it to quit, then run that other command.

To feed something into a program, you need to use redirection.

What I do to run scripts remotely is something like:

Code:
ssh username@host exec sudo su <<EOF
echo "Local hostname is $HOSTNAME"
echo "Remote hostname is \$HOSTNAME"
cd /usr/folder/folder
ls
EOF

The final EOF can't be indented, at all.

When in doubt, replace 'ssh' with 'cat' to see exactly what script you're trying to send to the far side!
 

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DH-EXEC-INSTALL(1)						      dh-exec							DH-EXEC-INSTALL(1)

NAME
dh-exec-install - Install (and possibly rename) files. SYNOPSIS
#! /usr/bin/dh-exec debian/default.conf => /etc/my-package/start.conf usr/bin/* DESCRIPTION
Being a sub-command of dh-exec(1), this program must not be ran directly, but through dh-exec, which automatically runs all available sub-commands if run bare; or explicitly with dh-exec --with=install. It is meant to be used for dh_install(1) files, and those alone. If it finds that its input is not such a file, it will do nothing, but echo back the contents. The purpose of the program is to extend dh_install(1)'s functionality, by allowing to specify a destination filename. This can be accomplished by a special syntax: the " => " mark between a source and a destination means that the source file should be installed with the specified destination name. For obvious reasons, the source must not be a wildcard, and the destination in this case must be a file, and not a directory. All other non-comment lines are left alone. RESTRICTIONS
Due to the way executable scripts are called from debhelper(1), there is no way to know what options were used for the original dh_install(1). This means, that the --sourcedir option of dh_install(1) will not work correctly when dh-exec-install is in use. IMPLEMENTATION
Internally, the renaming happens by creating a temporary directory under debian/tmp/, and copying (or moving, if the source was under debian/tmp/ to begin with) the file there, with the new name. This is done this way to allow dh_install(1) to do the real copying, and allow its options to continue working, even when renaming is involved. The temporary directory is put under debian/tmp so that it will be cleaned by dh_prep(1) when the clean target gets to run. Thus, no extra code is needed anywhere to clean up the renamed files. ENVIRONMENT
DH_EXEC_SCRIPTDIR Indicates which directory the command-specific scripts should be sought for. If not specified, scripts will be searched for in /usr/share/dh-exec/. FILES
$DH_EXEC_SCRIPTDIR/dh-exec-install-* The various scripts for the higher-level program. SEE ALSO
debhelper(1), dh-exec(1), dh_install(1) AUTHOR
dh-exec-install is copyright (C) 2011-2012 by Gergely Nagy <algernon@madhouse-project.org>. 2012-05-03 DH-EXEC-INSTALL(1)
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