replace specified content with some else string

replaceContent.sh

#!/bin/sh

# replace name of html entry with fixed "index.html" in cmd file
targetCmdPath="${PWD}/{{ slug }}.sketchplugin/Contents/Sketch/my-command.js"
sed -i -r -E "s/(_webpack_resources\/).+(\.html)/\1index\2/" "$targetCmdPath"

# copy index.html to _webpack_resources
htmlPath="${PWD}/src/dist/index.html"
webpackResourcePath="${PWD}/{{ slug }}.sketchplugin/Contents/Resources/_webpack_resources"
/bin/cp -f "$htmlPath" "$webpackResourcePath"

# remove the backup file which is auto created by sed
targetBackupCmdPath="${PWD}/{{ slug }}.sketchplugin/Contents/Sketch/my-command.js-r"
rm "$targetBackupCmdPath"