Bash function to replace a keyword with a provided value in a text file

replace_keyword.sh

#!/bin/bash
# Author: https://github.com/andersonbosa
# Source: https://gist.githubusercontent.com/andersonbosa/9966c985fb5baf250271447746a714a3/raw/31cba94a8db1acbeb3636e272e1345745c72891e/replace_keyword.sh
#
# Example usage:
# replace_keyword "example.txt" "{{title_template}}" "New Title"


#######################################
# Function to replace a keyword with a provided value in a text file
# Arguments:
#   $1: File path of the text file
#   $2: Keyword to be replaced
#   $3: Value to replace the keyword with
# Returns:
#   None
#######################################
replace_keyword() {
    local file_path="$1"
    local keyword="$2"
    local keyword_value="$3"

    # Check if the file exists
    if [ ! -f "$file_path" ]; then
        echo "Error: File $file_path not found."
        return 1
    fi

    # Replace the keyword with the provided value using sed
    sed -i "s/$keyword/$keyword_value/g" "$file_path"

    echo "Keyword '$keyword' replaced with '$keyword_value' successfully in $file_path."
}