I'm adapting this script to insert one file's content into another file. This is what I have now:

#!/bin/sh



# Check if first and second parameters exist

if [ ! -z "$2" ]; then

    STRING=$(cat $1)

    # Check if the supplied file exist

    if [ -e $2 ]; then

        sed -i -e "2i$STRING" $2

        echo "The string "$STRING" has been successfully inserted."

    else

        echo "The file does not exist."

    fi

else

   echo "Error: both parameters must be given."

fi

I run it with: ./prepend.sh content.txt example.txt

The content.txt file:

first_line

second_line

The example.txt file:

REAL_FIRST_LINE

REAL_SECOND_LINE

The script's output:

sed: -e expression #1, char 24: unterminated `s' command

The string "first_line

second_line" has been successfully inserted.

And the content of example.txt file remains the same, when I want it to be like this:

REAL_FIRST_LINE

first_line

second_line

REAL_SECOND_LINE