Either change the account details for the user currently credited on posts… to your name… or if it’s already your name but not shown, add the post meta… or add ACF free, and a custom field to posts which contains your name and add it to the page template… or be kind enough to give some meaningful information about the current set-up – for a potentially more accurate answer.
Are you the author (in the WordPress sense) of all of these articles? If yes, it might be as simple as displaying the author on your blog posts in the template.
You can leverage [WP-CLI](https://wp-cli.org/) to edit posts in batches. You can do things like find and replace, append to post content, attach post-meta, change authors, etc.
Before you do this, you always create a backup of your site. With great power comes great responsibility.
If you want more specifics, you’ll need to provide more details.
There’s a dozen ways…
If your theme has an action hook before/after post content, a function that outputs whatever you want…
Create a filter that appends/prepends whatever you want on ‘the_content’ filter…
Loop through posts and append/prepend content to the actual saved content…
Depending on theme, output author meta. Theme dependent, so no universal “wp” way…
Whichever is the easiest is dependent on your stack, theme, how the site is built. But doable for sure.
Either change the account details for the user currently credited on posts… to your name… or if it’s already your name but not shown, add the post meta… or add ACF free, and a custom field to posts which contains your name and add it to the page template… or be kind enough to give some meaningful information about the current set-up – for a potentially more accurate answer.
Are you the author (in the WordPress sense) of all of these articles? If yes, it might be as simple as displaying the author on your blog posts in the template.
You can leverage [WP-CLI](https://wp-cli.org/) to edit posts in batches. You can do things like find and replace, append to post content, attach post-meta, change authors, etc.
Before you do this, you always create a backup of your site. With great power comes great responsibility.
If you want more specifics, you’ll need to provide more details.
There’s a dozen ways…
If your theme has an action hook before/after post content, a function that outputs whatever you want…
Create a filter that appends/prepends whatever you want on ‘the_content’ filter…
Loop through posts and append/prepend content to the actual saved content…
Depending on theme, output author meta. Theme dependent, so no universal “wp” way…
Whichever is the easiest is dependent on your stack, theme, how the site is built. But doable for sure.