Linux finddela

I'm looking for a talented graphic designer to craft a unique and professional logo for my company that embodies its visionary ethos. Below you'll find a snapshot of what I'm envisioning: - **Color Palette**: Predominantly blue – it's calm, trustworthy, and reflects our company's vibe. - **Design Style**: Sleek, minimalist aesthetic; think clean lines that symbolize our modern approach to business. - **Imagery**: I have specific imagery and symbols that are essential to our brand's identity. I'll provide these to help guide your design process. I provided an early draft we are considering. New design should included DNA helix **Company name** SynPlexity **Tag Line* Scaling innovation **Ideal Candidate Qualities**: - Proficient in graphic ...

Migrate Linux server with word press (physical sever ) to a different supplier (VPS) with same operating system through plesk both have with word press, ensuring website and emails (MS Team) are down minimal time 4 tenants.

I'm looking for a vintage/retro style sticker. Key aspects of the job: - Incorporating specific vintage/r...that a small cliff/ with hills over it can be seen in the distance; all the way from left to right. Above the hills some few clouds and sun beginning to set in the horizon. Somewhere in the sticker it needs to state SURF KANSAS (RETRO / VINTAGE FONT and COLOR.) We don't expect a perfectly finished work, just a draft in hope to find the right designer as it is difficult to choose someone because no one really has samples of what we are looking for. Once we find the right designer we will hire him/her to complete the work and revisions if revisions were needed. Examples of vintage style provided; not that is necessary to follow any in particular, but we...

Linux Server - Testing Server Performance - Testing Server Response

I need an expert in prototype creation with a flair for innovative product design. The project involves creating a prototype for a patent-pending product - a uniquely designed hat with functionality beyond a simple head cover. Here are my requ...Additionally, the hat should have a means to attach and detach an object to it, and I envision this being accomplished through velcro straps(but this may change if needed). 2. **Material Consideration:** The hat will be primarily made of cotton and/or polyester. As such, the ideal candidate should have experience working with this material or a similar one. If you have relevant experience and find this project interesting, I look forward to hearing from you. Please note that an NDA may be required before moving forward with detailed speci...

I'm seeking a proficient HR recruiter to find high-quality local candidates with mid-level experience for job labor work. A familiarity with local talent markets and an established recruitment network are required to successfully identify and attract the best fit for our organization. Ideal Skills and Experience: - Proven knowledge and experience in HR recruitment. - Deep understanding of job labor work. - Established local market network. - Exceptional evaluation and interviewing skills. - Ability to attract middle-level talent. Experience in the technology, manufacturing, or healthcare sectors is a bonus. Please demonstrate your capacity for fulfilling this role in your proposal.

I'm looking for a specialist in Smart PLS to guide and enhance my project's data analysis capabilities. - **Main Goal**: I intend to comprehensively understand data patterns within my project using Smart PLS, and potentially build a robust predictive model as pa...structured data, so familiarity with SQL databases or similar structured data environments is essential. **Ideal Skills and Experience**: - Extensive experience with Smart PLS and related statistical software. - Strong background in statistics and machine learning. - Ability to teach complex concepts in an accessible manner. - Previous experience in mentoring or training in data analysis. I'm hoping to find someone who is not just skilled at data analysis, but also a great mentor to help me fully grasp an...

Own server on Proxmox where we store clients' VMs. update the servers, set up zabbix (or similar), and take care of the VPN wireguard. most of the servers in Hetzner. We need help from time to time to configure new VMs, change configurations and improve certain things. In the future, we want you to run our hosting server with DirectAdmin. * servers are on linux and windows server

Urgently seeking a highly skilled WordPress developer available on February 2, 2024, and potentially over the weekend. The project involves complex WordPress tasks, including speed optimization, addressing Linux issues, and resolving core WordPress challenges. Key Requirements: Immediate Availability: Must be available on 2-2-2024 and preferably the following weekend. Advanced WordPress Skills: The candidate should have expert skills in WordPress to tackle complex technical issues. Proven track record in significantly improving WordPress site performance. Work must be done on VM/Remote machines. We do not grant admin access for local work. This is a firm policy. Requests for admin access will be viewed as unprofessional and naive. We believe in professional trust but not in hand...

...(warehouse clearance). We need 2 versions of the banner (in desktop and mobile aspect ratio). You can visit our website on both desktop and mobile to see the required size of the banners (same as the currently active slide-banner on top). The text on the banners needs to be as follows: == MAGAZIJNOPRUIMING! EXTREEM LAGE PRIJZEN! KORTINGEN TOT WEL 75%! BEPERKTE VOORRAAD, DUS OP = OP! == You can find the category with these products through the link below: You can add images from those products from the link above to add to the banner (use the best looking products and product images). More products are added constantly, so check back later as well in case there are better products/images to add to the banner. Be creative, but make sure the design fits the

I'm seeking a PHP expert to meticulously audit and rectify my SMS application. Key areas I need a focus on: - Rigorous code audit for vulnerabilities - Smooth functioning of the web-based admin interface - Assurance of seamless communication between SMPP and HTTP connections Crucial job essentials: - Proficiency with PHP (version unclear) - Familiarity with CentOS and Linux environments - MySQL database management expertise - Spanish speaker is a plus This role is perfect for someone who thrives on restoring efficiency and security to existing systems with proactive problem-solving skills. Your work will directly boost the reliability of our communication services.

Hello Hain, I have another task for you, it's about the ipsec setup: can you please disconnect the client and connect it to the ipsec server you made some time ago ? The purpose of this is so that we can test an application that is installed on the client vm, while replicating the network setup.

Hi Vianne L., I am back again. Another product. For this one, I will attach a picture of an old flyer that has corrections. We need you to work your magic again. We will keep all the usual information. For the product picture, you can look on our website. If you can find a close-up of an airconditioner coil that would be great.

I am in need of a skilled and knowledgeable Android developer to create an exclusive app designed for voice and video calls. The app will only permit direct calls between two users. Please find the key details and requirements of the project below: - APP FEATURES: Ensure the implementation of direct calling feature between two individuals. - SECURITY: Implement fundamental security measures to protect user communication within the app. While advanced encryption or two-factor authentication might not be required, the security should be strong enough to maintain user privacy and protect against data breaches. - PLATFORM: This task only requires the creation of an Android version of the app. There is no need for iOS or Web versions at this stage. The ideal candidate should have pas...

...pioneering in the field of advanced control systems for machinery and plants, emphasizing IoT connectivity and modern communication structures like IP500 and LoRa. We are currently at a thrilling juncture as our proprietary control system moves from prototype to production phase, signaling a significant step towards impacting various industrial sectors. Our systems are multi-modular, relying on a Linux computer with an UBUNTU 20.04 kernel, as well as ESP32S3 Boards for other modules, with development primarily in Python for PLC software and C/C++ for ESP32S4, using Visual Studio Code and GitHub and JavaScript. We are seeking dedicated Full-time Programmers and Senior Programmers eager to reinforce our team. Your role will be crucial in integrating sensors and actuators, developin...

We are a young, growing driving school from Germany and would like to increase our level of awareness. To do this we need an advertising poster on which we would like to present our company. It should be able to be printed in sizes DIN A4 and DIN A3 and oriented in portrait format. Potential clients (16 to 25 years old) should be able to find information such as address, opening times and contact details on the poster. There are two locations: Landau and Edenkoben. A small photo of both should be shown so that the rooms can be recognized. Below that should be the address and the respective opening times. The company logo should also be present and one to three additional photos for illustration. Which images are used is up to the designer. The frames of the photos should not be rigi...

Find a channel on Telegram (the messaging app) which claims that vaccinations are good for our health. Of course, the channel / messages should not be written by you and therefore, there must be at least 1 month old.

I'm searching for a knowledgeable Zoho Developer to enhance my operational efficiency with a tailored workflow solution. Here's what this project entails: - **Custom Workflows Development:** - Creation of workflows with basic condition...integrate with other Zoho apps or external APIs. - **System Optimization:** - Aimed at increasing the automation within my processes. - Ensure system reliability and performance. **Perfect Fit Qualities:** - Experience with Zoho workflow creation. - Familiarity with Zoho Creator and its API. - Strong understanding of workflow conditional logic. - Good problem-solving skills. I am eager to find someone with the right skill set to make my operations more efficient and streamlined. If this sounds like a project you'd excel at, ...

I'm looking for an experienced freelancer to set up a Mediastream 2 server on my Centos(Linux) - based system to facilitate HD video conferencing through Linphone. The server must support an unlimited number of video conference rooms. The ideal candidate should possess: - Expertise in setting up and configuring Linux servers - Previous experience with streaming servers, specifically Mediastream 2 - Proficiency in implementing VoIP solutions, particularly Linphone - Knowledge of network security to ensure safe and private conferencing - Ability to optimize for high-definition video transmission - Skills in automation and scripting for server maintenance and updates Your tasks will include: - Installing Mediastream 2 on a Centos server - Configuring server for HD quality...

I'm seeking a skilled Google Looker Studio data visualization expert to create a highly interactive dashboard for my marketing campaigns. Here's what I'm looking for: - A dashboard special...Google Looker Studio or similar tools. - Strong experience with Google Ads and Facebook Ads analytics. - Expertise in interactive dashboard design and data visualization. **Requirements:** - Create an intuitive and user-friendly design. - Ensure the dashboard allows for extensive customization of visualizations. - Construct a data integration plan for Google Ads and Facebook Ads. I'm eager to find someone who can bring their own creative insights while remaining precise to the project needs. Show me your previous works that echo this level of interactivity, and let'...

...requirements, and other pertinent information. Resume/CV Database: A secure database where candidates can upload their CVs and profiles, accessible to recruiters. Job Search Filters: An intuitive search feature allowing users to efficiently filter and find jobs based on various criteria. Job Alerts: A notification system that informs users about new job listings matching their profiles. Application Tracking System: A feature for recruiters to track the status of applications. Candidate Matching Algorithm: An intelligent matching system to help recruiters find the most suitable candidates for job vacancies. Design and Technical Requirements: Responsive Design: A mobile-friendly design ensuring optimal viewing across various devices. Unique Aesthetics: While providing ...

I'm currently encountering a permissions issue with my Apache server hosted on a Linux system, managed via Webmin. My goal is to swiftly resolve a "Forbidden You don't have permission to access this resource" error that I received when trying to access content within a web application directory. Key tasks I need assistance with include: - Diagnosing the root cause of the permissions error - Adjusting Apache virtual host settings - Correctly setting up SSL for secure access - Verifying correct directory permissions and .htaccess configurations, if applicable Ideal Candidate Skills: - Proficiency in Linux operating system - Expert understanding of Apache server management - Experience with Webmin control panel - Familiarity with SSL installation and tro...

...Terraform for infrastructure as code deployments - Experienced with AWS services, especially in regards to security and computing - Familiarity with Wazuh - open-source security monitoring tool - Understanding of Elasticsearch configurations - Capable of advising on best practices for system security and monitoring REQUIREMENTS: - Set up Wazuh on AWS following best practices for security - Alma Linux should be the base operating system for the installation - Ensure that the latest version of Wazuh is installed and configured properly - Craft an approach to either integrate with an RDMS , please use MYSQL Stand up an instance of the current version of Wazuh in the AWS Operations Account in the Sydney region. The service name should be ‘rd-wazuh-au’. The service ...

Specifications Note for Logo Editor 1. Compatibility: - The logo editor should be compatible with multiple operating systems, including Windows, macOS, and Linux. - It should also be compatible with popular web browsers, such as Chrome, Firefox, and Safari. 2. User Interface: - The logo editor should have an intuitive and user-friendly interface that allows users to easily navigate and access different features. - It should have a clean and organized layout, with clear labels and icons to guide users throughout the editing process. - The interface should provide a preview area where users can see real-time changes to their logo design. 3. Editing Tools: - The logo editor should offer a wide range of editing tools to create and modify logos. - These tools should include options fo...

Precisamos criar uma página de assistências técnicas para suporte ao cliente. Não temos preferência de linguagem de programação, porém precisa estar hospedada em ambiente linux, hospedagem locaweb e consulta em banco de dados MYSQL. Nessa página o cliente irá fazer alguns filtros de acordo com: - Marca - Estado - Cidade Ou - Digitando o CEP O resultado trará uma assistência técnica mais próxima, mostrando localização no mapa (Google Maps) e dados de contato como: - Nome - Telefone - Responsável - E-mail; etc Caso não exista; retornará o importador oficial. Já temos hoje a lista de assistências técnicas em excel, e também ...

I need assistance with both product listing and order fulfillment on eBay. The specific type of products is not determined yet but regardless experience in different product categories would be beneficial. The ideal freelancer should: - Have experience in eBay listing and fulfillme...able to handle order management effectively - Be adaptable to different product types Prior experience with this kind of task on eBay is highly preferred. This job requires someone who can handle product listings and manage orders diligently. Your role will require you to keep listings updated and handle the order fulfillment process efficiently. looking for someone to list my eBay products and find trending products to dropship on eBay from amazon and Walmart websites as well as list them and fulfi...

I'm looking to transform vast quantities of PDF data into one streamlined Excel sheet. This project entails converting content from hundreds of PDF files into a s...worksheet seamlessly. - Organization: Order data to match specific CSV field requirements. The ideal freelancer will have: - Proficiency in PDF conversion tools. - Advanced Excel skills, including data sorting and formula creation. - Experience with data organization aligning with CSV formats. - Attention to detail and accuracy for data integrity. - Ability to deliver on tight deadlines. I'm eager to find someone who can work efficiently and precisely to help us manage and utilize our data more effectively. If you have a knack for meticulous organization and a proven track record with similar projects, I'...

I'm looking for a talented developer for update the code in unityed_media samba vfs plugin that stoped working in version 4.14 of SAMBA, in Linux and BSD. Ideal Skills: - Experience with Samba - Knowledge of C Programming Role: - Debug the existing code in unytied_media - Update it to make it work the same way it use to prior to 4.14 - Ensure compatibility with newer software versions Link for the outdated version of the plugin: What changed in samba VFS framework in version 4.14: Lastly I expect to have this approved and as part of new official Samba releases. Thank you

I am looking for a highly skilled Linux developer with expert-level experience in managing WHM and CPanel environments. My project involves setting up, configuring, and maintaining servers with a focus on ensuring robust security and efficient operation. Ideal Skills and Experience: - Profound knowledge of Linux server management - Expertise in WHM and CPanel administration - Proficiency in server setup and configuration - Strong background in conducting security audits and applying updates - Capability for efficient troubleshooting and technical support Requirements: - Establish and maintain server infrastructure - Implement and monitor security measures - Provide timely technical support and issue resolution - Work within a tight one-month deadline I'm aiming for re...

...style of thumbnails. Ideal candidate: - Proficient in graphic design tools (e.g., Adobe Photoshop, Illustrator) - Experienced with video editing software (e.g., Adobe Premiere Pro, After Effects) - Strong understanding of social media trends, especially on YouTube and Tik Tok - Creative, timely, and has an eye for detail - Ability to work with feedback and deliver engaging content I'm hoping to find someone who can take my ideas and translate them into captivating visuals that resonate with my audience. Let's make social media more fun together!...

...Description: We are seeking a freelance professional with proven experience in system administration to install and configure Taiga, an agile project management system, on an Ubuntu server hosted on a Proxmox 7 virtual machine. This is a task-based position with payment upon successful completion of the job. Requirements: Proven experience in Taiga installation and configuration. In-depth knowledge in Linux system administration, specifically Ubuntu. Experience with virtualization using Proxmox 7. Ability to perform installation remotely and securely. Knowledge in network configuration and server security. Excellent problem-solving and debugging skills. Ability to optimize system performance. Tasks to be Performed: Install and configure Taiga on the Ubuntu server. Ensure syste...

I'm currently looking for a professional who can assist in understanding trends and patterns in my qualitative data. Key Project Objectives: • Data analysis focusing specifically on identifying trends and patterns • The data to be analyzed are sourced from interviews and will be in a...utilize the Nvivo tool. The successful candidate would ideally possess the following skills and experience: • Proficiency in using Nvivo for qualitative data analysis • Good understanding of data interpretation, particularly in discerning trends and patterns • Extensive experience working with interview-sourced data. The project requires a meticulous eye for detail and the critical capacity to find meaningful correlations within a sea of data, providing a solid gr...

As your developer, I will create a PHP cronjob tailored for a Linux operating system. This specialized cronjob will be designed to send text messages via WhatsApp at hourly intervals. The ideal freelancer for this unique project should possess: - Extensive experience with PHP programming - Proficiency in setting up cronjobs specific to a Linux operating system - A solid understanding of WhatsApp's API limitations and usage in relation to text messaging - Capability of creating a system that doesn't merely function, but is also reliable and efficient Please note, as the task is recurring every hour, tenacity and precision with code writing is key to prevent any possible service interruption.

Hi, I would like to create an Artificial Intelligence Web Application for cargo transport. The application should be designed for optimal routing. They input the destination and the application finds the quickest route but it should look for real-time data for traffic status, traffic jams, accidents, etc., and find optimized routes. Then it should look for the internet for anyone in need of cargo transport in the current path. So if the truck is 80% full it has 20% of free capacity and can load up if does not much deviate from the path. Also, there should be real-time alerts or notifications to specific people if the driver deviates from the route. You can use the tools of your choice and also design per your choice. The more simple for use it is, the better.

I want to use a different paypal checkout plugin or service like our competitor use. My competitor website is , They sell copyrighted materials so I they cant use paypal plugin directly. So They use a paypal plugin which hides the product name and use a third party i think. Could someone help me to find which service they use and help me to use similiar gateway. You can find more details when you try to do a checkout with a product. THanks in advance

This engine is used to compare prices and find products present on numerous e-commerce sites via a system such as web scraping This search engine must be developed in our test CRM software which then be transferred to the final one.

...looking to improve the security of my website, which previously suffered from hacking attempts. Despite the implementation of additional security measures, I still need skilled professionals to enhance the robustness of my website against similar invasions. Please note: - My website is WordPress and WooCommerce website. Hacking was attempted to display a CC form at checkout. I wanted someone who can find the code, remove it, scan website to make sure now it is secure. - I changed the setting of WooCommerce, so people can't order without creating an account. But our website used to provide Guest orders and if I enable it now, it display the CC form (which is created by hacker). Right now, the form is not there, because of I changed the settings (disable guest order) but I wa...

Seeking an expert to transform my FileMaker application to operate seamlessly with PHP/MySQL on a Linux server. The successful freelancer will deliver a system encompassing the features outlined below. Responsibilities: - User registration system implementation - File upload functionality - Database integration Key Data & Security: - The system will manage critical datasets, including customer information and inventory data. - We require secure user authentication with username/password. - Role-based access control must be integrated to manage user permissions effectively. Ideal Candidate Skills: - Proficient in PHP, MySQL, and Linux server environments - Experience in converting FileMaker applications to web-based platforms - Strong understanding of data security mea...

...get the intention of potential customers who are initially interested. 3.Find the contact information of key people Information we can provide: 1. Product e-catalogs, videos. local printing is required, we can cover the cost. 3. Contact business cards display samples product training 6. Booth information and information on key customer profiles and key booth walk-through points Competence Requirements:  have very good communication skills, and the ability to express themselves in the local language, proficient in learning and mastering product knowledge.  Previous sales experience in electronics and lighting products preferred  Previous trade show sales experience preferred Job content: 1.Find the core counterparts of potential customers and key people, visit marke...

I'm in need of a skilled freelancer to fortify the security and maintain the integrity of my Windows & Linux-based shared hosting server. My expectations include the following essential tasks: - Expunge all forms of viruses and malware, ensuring a secure and clean server environment. - Implement and manage a robust firewall system, monitoring it to prevent unauthorized access and potential threats. - Conduct regular software updates, patching vulnerabilities, and keeping all server components up to date for optimal performance and security. **Skills and Experience Required:** - Proficiency in Windows & Linux Server security measures - Experience with virus/malware removal tools - Knowledge of configuring and monitoring firewalls - Familiarity with shared hosti...

I'm seeking a skilled freelancer to create a robust multivendor online realtime auction platform/ php script for my existing website. Here's what's crucial: - **Bidding System Development:** - Implement a minimum bid increment feature to maintain fair bidding practices. - Develop an automatic bidding system that allows users to set their max bid and have...interface design and search functionalities. - Knowledge of payment gateway integration for secure transactions. - Familiarity with developing verification and feedback mechanisms. I'm looking forward to working with a freelancer who can translate these requirements into a seamless and user-friendly auction platform. Freelancer must be able to provide post support and maintainance as needed. Please find...

...soil structure interaction. More specifically, I'm requiring guidance from an individual who possesses a teaching background in this field. The ideal candidate for this job should have: - A strong background in teaching soil mechanics, able to make complex concepts digestible. - Comprehensive experience in various aspects of the subject (despite my omission on which specific area, I'm hoping to find a versatile expert who can provide overall guidance). Consider this a great opportunity to leverage your knowledge to mentor a devoted student in the field. Note that when applying, it's imperative to include the breadth and depth of your experience in teaching soil mechanics. Demonstrating previous successful mentorship roles will also significantly strengthen your ...

I am looking for someone who can find existing crypto memes and remake them for me using my own character. I need someone who can do 300 in 1 months time

I'm on the hunt for an experienced Python developer to tackle a couple of issues hindering the efficiency of my web application. I believe there are scripts not performing as they should be and a bug causing errors, disrupting my app's smooth running. Here's what's needed for this task: • Diagnosis and repair of malfunctioning scripts • Bug identification and elimination To be successful in this project, you should have: • Proven experience in Python development • Solid track record fixing bugs and script errors Additionally, I'm particularly interested in seeing your past work, especially any projects related to Python development and bug rectification. Please include this in your application, as it would make your proposal stand out. Plea...

...specifically TikTok. - The project at hand involves creating a completely automated system for a TikTok page. - The automation level we are looking for is comprehensive - it should schedule posts, curate content, engage with followers, and most importantly, produce posts all on its own. - The content to be generated and posted is primarily user-generated content compilations. - I want the system to find, sort, and post user-generated content relevant to my page and audience. An understanding of TikTok trends and popular content will play a big role in this task. - The primary aim of this TikTok page is to gain a larger follower base. Any experience in social media growth strategies would be highly beneficial for meeting this goal. - The end game? A fully automated TikTok p...

I'm seeking a proficient C developer with experience specific to client-server software development for Linux/Unix operating systems. This project will involve creating a robust, efficient, and secured client-server software tailored to my business requirements. The ideal candidate should possess: - Strong C programming skills - Extensive experience in client-server software development - A well-versed understanding of WebSocket clients and C based Docker engine API Clients e.g. libdocker This technicality of this project would suit someone who is collaborative, detail-oriented, and can demonstrate consistent success in previous server software development projects. Your portfolio or demonstrable experience will be highly considered during the selection process.

I have a small Python Script that I execute on a remote Linux server from Windows cmd. Inside the script, I put 1 car id or more (VIN = Vehicle Id Number: 17 characters), some data are retrieved from a website and stored on my DB. I would like to execute the script from a webpage (to implement to my wordpress website) with an input field to enter a VIN. Once data are retrieved and stored on the DB for the VIN by the Python script, we show the result on the webpage: (the work) 1. Show Car Data / Car Options list / Car Pictures 2. Show a GR Logo on the backgroud of the options list page 3. Manage sessions/login and and login/duration: log sessions history upload (algo given below) 4. Check the VIN if already exists on the DB 5. Manage VIN input error / Lent (17 Characters) 6. Manage 3...

...color schemes and understanding their psychological impact on viewers would be beneficial. Candidates with a keen eye for design aesthetics, a thorough understanding of ZenCart design elements along with solid experience in branding & logo design preferably in the same field, are highly desired for this task. I have other work that I am considering getting done, however starting small so I may find the right person to work with, we have many banner changes throughout the year. Please submit your rough idea . I dont want to waste anyones time, here is my site, the site is very unique and has been in business since 1989. Previous watermarks have been submitted last year, however it sent all my images blurry-grainy I want and need the watermark to enhance my images - example gl...

...Kubernetes according to workload demands and managed from a Jenkins controller situated on a Linux VM. Key requirements and responsibilities include: - Install and configure necessary Jenkins plugins: - SCM plugins for source code management. - Build and test automation plugins for seamless CI/CD pipelines. - Configure Kubernetes to dynamically allocate Jenkins agents: - Set up auto-scaling of Jenkins agents to manage workloads efficiently. - Ensure secure and stable communication between the Jenkins controller and Kubernetes. Ideal candidate's skills: - Strong expertise in Jenkins and its plugin ecosystem. - Proficient with Kubernetes cluster management and pod scaling. - Deep understanding of Linux operating systems. - Experience with infrastructure as ...

Hello, I'm looking for a Word specialist to build me 2 template pages. You can find the 2 price lists in the appendix. --> it´s already the finals content Furthermore, I should be able to edit it afterwards. Prices are edited. Rows with new products should be able to be added. If more products are added, a second page should be automatically created with header and footer