Ubuntu по устаревшим и Windows на UEFI?

Вот скрипт для автоматизации решения grep piping:

#!/bin/bash

# Use filename if provided as environment variable, or "foo" as default
filename=${filename-foo}

grepand () {
# disable word splitting and globbing
IFS=
set -f
if [[ -n $1 ]]
then
grep -i "$1" ${filename} | filename="" grepand "${@:2}"
else
# If there are no arguments, assume last command in pipe and print everything
cat
fi
}

grepand "$@"