learn_to_trap_error.sh

#!/bin/bash

set -e
stderr_log="/tmp/stderr.log"
exec 2>"$stderr_log"

notify() {
    local exit_code=$?
    local lineno=$1
    if ! [ $exit_code -eq 0 ]; then
        #echo "Failed at $lineno with $exit_code"
        tail -n 5 $stderr_log
    else
        echo "ALL IS WELL: $exit_code"
    fi
}
trap 'notify $LINENO' ERR

ls -la | asdf                    
lsa -la
pwd
uptime