#!/bin/bash
version=2.6
log_file="$HOME/log-file-version-$version.log"

touch $log_file &>/dev/null

echo "log to my log file from script 1" >> $HOME/log-file-version-?.?.log

gnome-terminal --tab --active --title="script2" --  sh script2.sh

#!/bin/bash

echo "log to my log file from script 2" >> $HOME/log-file-version-?.?.log

log-file-version-2.6.log
log-file-version-?.?.log