log opened files in neovim

log_last_opened.lua

-- Log file opening to last_opened.txt
vim.api.nvim_create_autocmd("BufReadPost", {
    callback = function()
        local date = os.date("%b %d, %Y") -- Format the current date
        local file_path = vim.fn.shellescape(vim.fn.expand("<afile>:p"))
        os.execute(string.format("sed -i '1i%s' /home/user/.config/nvim/last_opened.txt", date .. " " .. file_path))
    end,
})