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Full Discussion: Assistance to connect to servers via ssh once and collect various commands into separate variables
Top Forums UNIX for Beginners Questions & Answers Assistance to connect to servers via ssh once and collect various commands into separate variables Post 303038881 by RudiC on Monday 16th of September 2019 09:41:38 AM
Old 09-16-2019
You could write a script (local or remote) and execute that, or use "here documents" like

Code:
IFS=$'\t' read FLAVOUR HOSTNAME IPADDRESS ACTIVE_KERNEL INACTIVE_KERNEL UPTIME <<- EOFREAD
        $(ssh -q user@targethost <<- EOFSSH | tr $'\n' $'\t'
        cat /etc/redhat-release 2>/dev/null || lsb_release -a 2>/dev/null | grep Description | cut -f2
        hostname
        hostname -I
        uname -r
        rpm -qa | grep '^kernel-[0-9]' |grep -vE `uname -r`
        uptime | cut -d "," -f1
        EOFSSH
        )
 EOFREAD

Try this to improve readability:
Code:
case "$status" in
        $UNREACHABLE)           OUT="cannot connect";;
        $INVALID_PASSWORD)      OUT="invalid account access";;
        $NO_HOME_DIRECTORY)     OUT="";;
        $PASSWORD_EXPIRED)      OUT="password expired";;
        $SUCCESS)               OUT="successful ssh access";;
esac
echo "$InputHost,\
      $InputIP,\
      $OUT,\
      $Tag,\
      $FLAVOUR,\
      $HOSTNAME,\
      $IPADDRESS,\
      $UPTIME,\
      $ACTIVE_KERNEL,\
      $INACTIVE_KERNEL"

(or use a shell array)


You duplicate the stdin redirection by exec < $SOURCE_FILE before the while loop and then redirecting the loop's stdin again.
Last edited by RudiC; 09-17-2019 at 10:22 AM..
This User Gave Thanks to RudiC For This Post:
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LEARN ABOUT DEBIAN

gnome-ssh-askpass

GNOME-SSH-ASKPASS(1)					      General Commands Manual					      GNOME-SSH-ASKPASS(1)

NAME

       gnome-ssh-askpass - prompts a user for a passphrase using GNOME

SYNOPSIS

       gnome-ssh-askpass

DESCRIPTION

       gnome-ssh-askpass  is  a GNOME-based passphrase dialog for use with OpenSSH.  It is intended to be called by the ssh-add(1) program and not
       invoked directly.  It allows ssh-add(1) to obtain a passphrase from a user, even if not connected to a terminal (assuming that an X display
       is  available).	This happens automatically in the case where ssh-add is invoked from one's ~/.xsession or as one of the GNOME startup pro-
       grams, for example.

       In order to be called automatically by ssh-add, gnome-ssh-askpass should be installed as /usr/bin/ssh-askpass.

ENVIRONMENT VARIABLES

       The following environment variables are recognized:

       GNOME_SSH_ASKPASS_GRAB_SERVER
	      Causes gnome-ssh-askpass to grab the X server before asking for a passphrase.

       GNOME_SSH_ASKPASS_GRAB_POINTER
	      Causes gnome-ssh-askpass to grab the mouse pointer using gdk_pointer_grab() before asking for a passphrase.

       Regardless of whether either of these environment variables is set, gnome-ssh-askpass will grab the keyboard using gdk_keyboard_grab().

AUTHOR

       This manual page was written by Colin Watson <cjwatson@debian.org> for the Debian system (but may be used by others).  It was based on that
       for x11-ssh-askpass by Philip Hands.

															      GNOME-SSH-ASKPASS(1)
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