sed command with -i option failing on Mac, but works on Linux

Question

I\'ve successfully used the following sed command to search/replace text in Linux:

sed -i \'s/old_link/new_link/g\' *

However,

Answer 1

Here is an option in bash scripts:

#!/bin/bash

GO_OS=${GO_OS:-"linux"}

function detect_os {
    # Detect the OS name
    case "$(uname -s)" in
      Darwin)
        host_os=darwin
        ;;
      Linux)
        host_os=linux
        ;;
      *)
        echo "Unsupported host OS. Must be Linux or Mac OS X." >&2
        exit 1
        ;;
    esac

   GO_OS="${host_os}"
}

detect_os

if [ "${GO_OS}" == "darwin" ]; then
    sed -i '' -e ...
else
    sed -i -e ...
fi