File: with_env

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#!/bin/sh
# Usage: with_env ENV_FILE COMMAND [ARGS...]
#
# This script lets you modify the environment of an executable before
# launching it. It uses an 'env file' which must contain lines like
# 'MY_VARIABLE="my value"'.
#
env_file=$1
shift

# Use set -a to export all variables defined in env_file.
set -a
. "${env_file}"
set +a

exec "$@"