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Top Forums UNIX for Beginners Questions & Answers Bash - here document on RHEL 6.8 and 6.9 servers aren't working Post 303040563 by Chubler_XL on Thursday 31st of October 2019 04:01:05 PM
Old 10-31-2019
Quote:
Originally Posted by greavette
I've also tested connecting to a RHEL 6 server multiple times to get the data I need. what I mean by this is instead of connecting to a RHEL 6 server once and collecting data I've tested connecting to a RHEL 6 for each command I need so connecting multiple times and there are no issues with the above commands I'm issuing.
This is the crux of it I think. On the first look at your code I was suspicious that the redirect of stderr on one of the commands was causing you to miss an error causing this. So some nice debugging on you part here allows us to rule this out.

What does concern me is the exec bash line. This is unusual and I'm having trouble understanding how the commands that follow make it to this shell.
I think another here-document may be called for!

Please try:
Code:
IFS=$'\t' read FLAVOUR HOSTNAME ACTIVE_KERNEL INACTIVE_KERNEL UPTIME <<- EOFREAD
        $ssh -qo StrictHostKeyChecking=no -o ConnectTimeout=1 user@$InputIP sudo -u user sh -s <<- EOFSSH | tr $'\n' $'\t'
        exec bash <<- EOFEXEC
        cat /etc/redhat-release 2>/dev/null || lsb_release -a 2>/dev/null | grep Description | cut -f2
        awk -F= '/^NAME/{print $2}' /etc/os-release 2>/dev/null || grep Red |cat /etc/redhat-release 2>/dev/null || lsb_release -a 2>/dev/null | grep Description | cut -f2
        hostname
        uname -r
        rpm -qa | grep '^kernel-[0-9]' |grep -vE `uname -r` | paste -sd \; || echo "Can't List Ubuntu Kernels"
        uptime | cut -d "," -f1
        exit
        EOFEXEC
EOFSSH
        )
EOFREAD

[/QUOTE]
This User Gave Thanks to Chubler_XL For This Post:
 

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