awk-replace-text-with-file

#!/bin/sh
set -euf

##
# Replace a text string with the contents of a text file.
#
# Example:
#
#     awk-replace-text-with-file hello demo.txt
#
# ## Tracking
#
#   * Command: awk-replace-text-with-file
#   * Version: 1.0.0
#   * Created: 2018-02-17
#   * Updated: 2018-02-17
#   * License: GPL
#   * Contact: Joel Parker Henderson (joel@joelparkerhenderson.com)
##

awk "/$1/{print; system(\"cat $file_path\"); next}1"