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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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GKSU(1) 						      General Commands Manual							   GKSU(1)

NAME
gksu - a Gtk+ su frontend SYNOPSIS
gksu [ options ] <command> gksudo [ options ] <command> DESCRIPTION
This manual page documents briefly gksu and gksudo gksu is a frontend to su and gksudo is a frontend to sudo. Their primary purpose is to run graphical commands that need root without the need to run an X terminal emulator and using su directly. OPTIONS
These programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below. Common Options: --user <user>, -u <user> Calls <command> as the specified user --message <message>, -m <message> Replaces the standard message shown to ask for password for the argument passed to the option --sudo-mode, -S Use sudo instead of su as backend authentication system. Notice that the X authorization magic will not work when using sudo for target users other than root. --title <title>, -t <title> Replaces the default title with the argument --icon <icon>, -i <icon> Replaces the default window icon with the argument --print-pass, -p Asks gksu to print the password to stdout, just like ssh-askpass. Useful to use in scripts with programs that accept receiving the password on stdin. --disable-grab, -g Disables the "locking" of the keyboard, mouse, and focus done by the program when asking for password --ssh-fwd, -s Strip the host part of the $DISPLAY variable, so that GKSu will work on SSH X11 Forwarding. --login, -l Makes this a login shell. Beware this may cause problems with the Xauthority magic. Run xhost to allow the target user to open win- dows on your display! This is ignored if running with sudo as backend for authentication. --preserve-env, -k Preserve the current environments, does not set $HOME nor $PATH, for example. FILES
/etc/gksu.conf Configuration file to setup system-wide defaults for gksu/gksudo. It provides an option to force the display grabing, also. RETURN VALUE
On success, gksu will return 0. If an authentication error ocurred, it will exit with error code 3. If the user canceled the dialog or closed the window, it will return error code 2. On other error conditions, gksu will return 1. NOTE
Note that <command> and all its arguments should be passed as one single argument to gksu just like one would to when using su. SEE ALSO
su(1), gksuexec(1). AUTHOR
This manual page was written by Gustavo Noronha Silva <kov@debian.org> for the Debian GNU/Linux system (but may be used by others). 2003 GKSU(1)
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