Extract linux version for all distribution

Hi guys,
i need to send these commands through any powershell ssh module in order to return the correct version of the operating system based on the distribution.
If I open putty and paste the code, it works without problems, if I use any module (posh-ssh or others) when I send this command, the output is an error.
Can anyone tell me why?

`$linuxhost = '192.168.10.207'

$LNXver = @'
/bin/bash<arch=$(uname -m)
kernel=$(uname -r)
if [ -n "$(command -v lsb_release)" ];
then distroname=$(lsb_release -s -d)
elif [ -f "/etc/os-release" ];
then distroname=$(grep PRETTY_NAME /etc/os-release | sed 's/PRETTY_NAME=//g' | tr -d '="')
elif [ -f "/etc/debian_version" ];
then distroname="Debian $(cat /etc/debian_version)"
elif [ -f "/etc/redhat-release" ];
then distroname=$(cat /etc/redhat-release)
else distroname="$(uname -s) $(uname -r)"
fi
echo "${distroname}"
'@
$LNXver2 = (Invoke-SSHCommand -ComputerName $linuxhost -Command $LNXver).result `

Start with the multiline /bin/bash command passed to Invoke-SSHCommand and compare its behavior with the same command in PuTTY. Capture the module's error output and determine whether the command can return the Linux distribution version through the SSH module.