Filtre

Son aramalarım
Şuna göre filtrele:
Bütçe
ile
ile
ile
Tür
Beceri
Diller
    İş Durumu
    2,000 perl projects iş bulundu, ücretlendirmeleri EUR

    I'm currently using PERL 5.10 system and requires a proficient expert to aid in modifying how passwords are hashed in my system. Initially, we employed SHA-256 but we're looking to switch to PBKDF2. Ideal Skills and Experience: - Proficient in PERL 5.10 - Familiarity with SHA-256 and PBKDF2 hashing methods - Prior experience in password re-hashing Task Objectives: - Identify current SHA-256 hashing method in the system - Modify hashing method to use PBKDF2 instead - Validate successful implementation of the PBKDF2 hashing method The project necessitates a strict focus on security and confidentiality given its sensitive nature.

    €12 (Avg Bid)
    €12 Ortalama Teklif
    30 teklifler

    Description: We are looking for web & app designers to help test a product that helps designers find illustrations. You will be required to use our illustrations in a realistic scenario and give us feedback about your experience. You wi...our platform while you are using it to find illustrations - You will receive a payment reward of up to $100 USD once the project is launched in public. We are also open to consider different forms of payments, incl. hiring you on a regular basis for repeated work. Expectations: - You are a web or app designer who regularly gets hired for projects through Upwork or other platforms - You are willing and able to use our platform while working on your projects - You are able to provide detailed feedback about our platform Please reach o...

    €119 (Avg Bid)
    €119 Ortalama Teklif
    28 teklifler

    I'm seeking a computer science engineer (CSE) with significant experience to assist mtech and phd students with their projects. This unique, challenging role would ideally suit someone who is not only adept in Java, Python, and C++ but also has a proven record in practical implementation. Key Tasks: • Assist students in diverse implementation tasks • Provide guidance on utilising Java, Python, and C++ Skills and Experience: • Proficiency in Java, Python, and C++ • Previous experience in Machine Learning, Data Management, and Software Engineering is essential • Excellent communication and presentation skills • Ability to work under strict timelines and deliver quality results A professional with experience in academic environments will be highly ...

    €239 (Avg Bid)
    €239 Ortalama Teklif
    8 teklifler

    I am on the hunt...Responsibilities: • Conceptualize and create versatile designs for multiple projects. • Provide unique and innovative suggestions for overall designs. • Ensure designs are fully optimized for both mobile and desktop platforms. Ideal Skills and Qualifications: • Proven experience in logo, website and packaging design. • Can translate ideas into visually compelling graphics for a diverse audience. • Comfortable working with no specific branding guidelines and open to feedback. • Proficiency in design software and technologies such as InDesign, Illustrator or Photoshop. • A keen eye for aesthetics and details. This is a great opportunity to let your creativity shine and work across a diverse range of projects. Lo...

    €6 / hr (Avg Bid)
    €6 / hr Ortalama Teklif
    33 teklifler

    More details: Company name: Paduano Construction. Tagline: From ground breaking to grand opening your trusted partner. Or From Vision to Reality Your Construction Ally. Contact info: 2801 W Coast Hwy, Newport Beach, CA 92663 949-813-1858 What style do you prefer for your logo and business card? Vintage and classic Which colors would you like us to use for your logo and business cards? Red, white and blue.

    €19 (Avg Bid)
    Garantili
    €19
    80 girdi

    Script Feature: - Login to a list of SSH servers by domain or IP (from text file) - Use a set of usernames + password (can be multiple passwords) to login to the servers. - Run Bash Script on the connected server (which comes from a txt file on the server running the script, not on the connected to server) - Timeout if SSH server did not answer. - Display results at the end of a run (show which servers the script did not run because of errors). Login simultaneously to all available ssh servers. Not server by server.

    €27 (Avg Bid)
    €27 Ortalama Teklif
    19 teklifler

    More details: What specific type of project are you looking to assign to a freelancer? Data entry What type of data entry work do you need assistance with? Data transcription What is the origin of the data that needs to be transcribed? Typed documents

    €12 / hr (Avg Bid)
    €12 / hr Ortalama Teklif
    11 teklifler

    Customised Graphics Social Media Posts

    €9 / hr (Avg Bid)
    €9 / hr Ortalama Teklif
    41 teklifler

    I'm seeking a seasoned copywriter who can comfortably create engaging content across several categories such as website content, blog articles, product descriptions, email newsletters and ad copies. The chosen candidate would ideally: - Be experienced in writing high-quality and engaging copy. - Be able to comfortably work on and deliver 7-10 projects each month. - Have the capacity to create a copy with a minimum word count of 500-1000 words per project. Your proven skills in copywriting across multiple domains and ability to meet deadlines effectively would be highly valued in this role. Whether you're a freelancer just starting out or an experienced professional, if you think you fit the bill and are up for the challenge, I would love to hear from you.

    €256 (Avg Bid)
    €256 Ortalama Teklif
    54 teklifler

    More details: I am looking to hire somebody with following skills: Flutter, windows software, Android, iOS, Desktop apps, mobile apps, node. We need help with several projects. We have existing team and need extra help with several projects. If you have mentioned skills please contact us.

    €169 (Avg Bid)
    €169 Ortalama Teklif
    71 teklifler

    I need to convert the following Perl code to PHP: The expected output is a PHP class that can convert a docx file into text. The attached zip contains a mockup of such class (with demo code) and a test docx file. The task is straight forward. If you place a bid, expect it to be accepted. If you fail to deliver, you'll be subjected to a bad review. This is to avoid wasting my time with autoposters and people who lowball the bid and then try to ask for more money. You have been warned. Read the brief, check the code and place a bid accordingly.

    €198 (Avg Bid)
    €198 Ortalama Teklif
    25 teklifler

    We are making a bidirectional EV charger. We need to obtain switching waves with 180° phase shifter as well as an inverted wave with same criteria. Both this wave should be obtained using Arduino.

    €25 (Avg Bid)
    €25 Ortalama Teklif
    9 teklifler

    I have 2 unfinished Access/VBA projects. I need assistance to finish the projects. My estimation is 3 working days. Max budget : 100$ Please note that I m also a freelancer. Thanks for you bid

    €107 (Avg Bid)
    €107 Ortalama Teklif
    31 teklifler

    We are seeking a skilled...problem-solving skills - Efficient performance optimization in large projects - Strong communication for collaborative development Mandatory; - React.js - GraphQL - - Team collaboration - Strong understanding of front-end development - You work 45 hours per week by sharing your screen during your shift - weekend available - You work on monthly basis incoms "no upfront" - You work on UTC time Please apply with your relevant experience and portfolio. (MIDDLE MAN OR AGENCY STAY AWAY) Your expertise will empower a community-connecting network that's rich in features and ready to scale. If you're eager to tackle this exciting challenge, I'd love to hear your strategy and see your portfolio showcasing similar projects. Let�...

    €2417 (Avg Bid)
    €2417 Ortalama Teklif
    72 teklifler

    More details: What specific projects or tasks do you need assistance with? Development, UI design, Figma to UI conversion; API integration; Sign in using OTP based authentication; Logging; Payment gateway integration What platforms or devices should the project be compatible with? Web, iOS, Android How soon do you need your project completed? Within a month

    €343 (Avg Bid)
    €343 Ortalama Teklif
    16 teklifler

    I am looking for professional grant writers experienced in securing government, corporate, and small business grants. Essential Skills & Experience: - Proven success in grant writing and securing funds - Strong familiarity with grants for environmental conservation projects and housing initiatives beneficial - Ability to work within a short timeframe, as this project is expected to last less than 6 months to a 1 year The focus of these grant proposals will be two-fold: 1. Advocacy for environmental conservation 2. Providing living spaces for young adults and starting families. If you have a solid understanding of these areas and can deliver within the mentioned timeline, I encourage you to bid.

    €402 (Avg Bid)
    €402 Ortalama Teklif
    34 teklifler

    Hey there, i want to get a portfolio pdf designed so i can pitch my clients. Freelancers with work experience will be preferred

    €13 (Avg Bid)
    €13 Ortalama Teklif
    7 teklifler

    I'm on the lookout for professionals who can bring me web and mobile application projects on a commission basis. The perfect candidate for this role will act as a business development manager, bridging the gap between potential clients and myself. Key Aspects of the Role: - Get web, mobile application and SEO projects. - Experience in diverse industries such as E-commerce, Healthcare, Education, and others would be advantageous as I am open to developing projects across any domain. A sound understanding of my company's capabilities (visit ) and expertise would be expected to help you pitch the projects appropriately. This is an exciting opportunity for those with a knack for business development in the tech field to succeed on a commission basis.

    €100 (Avg Bid)
    €100 Ortalama Teklif
    6 teklifler

    I'm urgently in search of a well-rounded and outstanding programmer fluent in numerous programming languages. It's essential for you to excel in Python, Java, C++, C#, Scala, Ruby, Python, Perl, Javascript, Go, SQL, Rust, Swift, Kotlin, HTML/CSS, and be experienced with NoSQL and LaTeX. Ideal technical expertise includes: - Data Visualization: Proficiency in matplotlib, D3.js, bokeh, or comparable tools - Machine Learning: Familiarity with TensorFlow, scikit-learn, PyTorch, or equivalent - Unit & Functional Tests: Experience using Selenium, Cypress, Mocha, or similar - Cloud Computing: AWS, Azure, Google Cloud Platform, or equivalent knowledge - Containerization: Docker The central task is to perform insightful programming assessments and coding within my enterpris...

    €23 / hr (Avg Bid)
    €23 / hr Ortalama Teklif
    52 teklifler

    ...ticketing platform. Key Features/Requirements: * It should automate the purchase of tickets for all Real Madrid matches including La Liga, UEFA Champions League, and Copa del Rey games. * Additionally, the bot must be configured to search for tickets within specified seating sections. Ideal Skills and Experience: * Proficiency in programming languages fit for bot development (Python, Javascript, Perl or similar) * Previous work in developing bots or automation tools, specifically ticket purchase bots, will be quite beneficial. * Awareness of ticketing platforms or a ready understanding of the Real Madrid ticketing process is a strong advantage. I look forward to hiring a dedicated and skilled developer who thoroughly understands requirements and can bring this project to fruit...

    €256 (Avg Bid)
    €256 Ortalama Teklif
    28 teklifler

    ...to be better looking and engaging, i will provide full data of projects including images and description. I am looking for an experienced website developer who can create a portfolio website for me. The website will showcase my engineering projects. Since it's a portfolio website, the visual representations of each project, clear and elaborate details, are vital. I deal with a variety of engineering fields, - Civil engineering - Mechanical engineering - Electrical engineering Ideal skills for this job are: - Proficiency in web design and development - Experience in creating portfolio websites - Knowledge of engineering or experience in the field is preferred but not required - Ability to translate complex engineering projects to compelling digital display...

    €62 (Avg Bid)
    €62 Ortalama Teklif
    33 teklifler

    More details:as per my work demand i need data information and to organize my data and need email collections and websites and also need some video tagging and application development Is this project for business or personal use? For starting a new enterprise What information should successful freelancers include in their application? Detailed project proposals How soon do you need your project completed? as per need on work demand

    €287 (Avg Bid)
    €287 Ortalama Teklif
    21 teklifler

    ...can handle a variety of digital projects as the specifics are yet to be determined. This could range from website development, mobile app development, to logo design. Ideal skills and experience: - Proven expertise in website and mobile app development as well as logo design - Ability to adapt quickly depending on the project needs - Strong portfolio of previous work in these areas Please include the following in your application: - Details about your past work relevant to website development, mobile app development and logo design - Any specific experience that you feel would be relevant for a diverse range of digital projects - A comprehensive project proposal outlining how you typically approach such projects Though the outcome of the individual projects...

    €16 (Avg Bid)
    €16 Ortalama Teklif
    24 teklifler

    Hi Webbook Studio, I noticed your profile and would like to offer you my project. We can discuss any details over chat.

    €23 / hr (Avg Bid)
    €23 / hr Ortalama Teklif
    1 teklifler

    Excited to work on more projects with you

    €65 (Avg Bid)
    €65 Ortalama Teklif
    1 teklifler

    Hello I’d like to work with you on specific google and fb ads projects. Set up and running the ads for 1 month for 3 clients.

    €533 (Avg Bid)
    €533 Ortalama Teklif
    1 teklifler

    I'm seeking a skilled Python developer who can assist me in building two distinctive projects - a test automation project and an API testing project - to be showcased on my resume and Github. Key Project Features: - Execution of tests on multiple browsers - Integration with CI/CD pipeline - Reporting and logging capabilities Python with the pytest framework will be used for both projects. This will be an excellent opportunity for individuals who have prior experience with pytest, selenium, and cypress. Proficiency in test automation and API testing is a must, as those are the critical components of the project. I look forward to hearing from potential candidates.

    €104 (Avg Bid)
    €104 Ortalama Teklif
    28 teklifler

    Hi Top Rank SEO Expert, I’d like to hire you for various SEO projects for multiple clients for 1 month of SEO.

    €546 (Avg Bid)
    €546 Ortalama Teklif
    1 teklifler

    I am seeking a patient, experienced mentor to guide me into the intricate world of programming. As a complete beginner desiring to learn asp.net mvc, .PHP core, laravel, net, angular js, API, jquery, javascript, azure, DevOps, entity framework, migrations to the latest frameworks and all related trends, I need someone who can show me the ropes through live sessions, and provide recordings for later reference. The goal of these mentoring sessions is to get expert and get a job on expert level. I need to understand how these technologies come together to solve real-world problems and create amazing results. The ideal candidate for this role would have: - Proven expertise in the mentioned technologies - Excellent teaching skills and patience - Experience with project-based learning methods ...

    €145 (Avg Bid)
    €145 Ortalama Teklif
    8 teklifler

    Hi Cigdem! I am happy to start a new thread for you for the next season of projects I have developing.

    €28 (Avg Bid)
    €28 Ortalama Teklif
    1 teklifler

    I'm seeking an expert to help cr...an expert to help create a Dockerfile that runs Perl and DBD::mysql so that I can run a legacy website. This should be a simple task if you have the knowledge. Specific requirements include: - A Dockerfile is the only output required, roughly corresponding to mine - It should build and run in wsl, i.e. docker run -p 8080:80 image_name - It must use Apache, Perl and the CPAN module DBD::MySQL - It should have been tested on a MySql database, the file is provided to run on localhost:8080/ - A screenshot of the above is required to prove that it is working (you just need a MySql Table with fields Id and Name) Candidates should ideally have: - Extensive experience in Docker and a basic knowledge of Perl - Understanding of Per...

    €63 (Avg Bid)
    €63 Ortalama Teklif
    5 teklifler

    I'm seeking a proficient IT specialist to assist me with various IT-related projects, with a strong emphasis on flexibility due to the lack of specifics addressed at this moment. - Adeptness in various IT fields, namely software development, network configuration, and database management, will certainly be advantageous. - While I'm unable to provide specific outcomes, the overarching goals for these IT projects will likely be to streamline processes, increase efficiency or improve security. - I'm open to working with both seasoned professionals and budding talents; your dedication and problem-solving abilities are what matters the most to me. Please include the following in your application: - Your areas of expertise or your preferred fields in IT - Past w...

    €30 (Avg Bid)
    €30 Ortalama Teklif
    7 teklifler

    ...working. MochaHost tech support got the Import buttons on the forms fixed but suggests they may not be able to fix the XML & XML+XSL submission buttons at the bottom of the forms. Here's what they say about that: When the server is upgraded, the Perl modules in the new server might not be fully imported. That's why your website doesn't work because some Perl module dependencies might be deprecated. MochaHost support says: We highly suggest you talk about the error with your Web Developer to ensure they can help you add the missing path on the Perl module. Based on our check, your website form processing is missing pointing to the `File::Spec` module which has been installed on the server. It seems like that might be a fairly easy fix and I have...

    €28 - €231
    Mühürlü
    €28 - €231
    1 teklifler

    * We are seeking a skill...problem-solving skills - Efficient performance optimization in large projects - Strong communication for collaborative development Mandatory; - React.js - GraphQL - - Team collaboration - Strong understanding of front-end development - You work 45 hours per week by sharing your screen during your shift - weekend available - You work on monthly basis incoms "no upfront" - You work on UTC time Please apply with your relevant experience and portfolio. (MIDDLE MAN OR AGENCY STAY AWAY) Your expertise will empower a community-connecting network that's rich in features and ready to scale. If you're eager to tackle this exciting challenge, I'd love to hear your strategy and see your portfolio showcasing similar projects. Let�...

    €2468 (Avg Bid)
    €2468 Ortalama Teklif
    116 teklifler

    ...performance tuning, sizing and capacity planning, database backup and recovery in a Unix O/S using RMAN and Oracle export/import utilities, administration, and maintenance to provide backup and disaster recovery. • Knowledge of installation, configuration, and maintenance of multi-node Oracle RAC enabled databases, including Oracle ASM and Oracle CRS management. Knowledge of PL/SQL packages, shell, and Perl scripts for task automation, and proactive database monitoring and notification using Oracle OEM Grid Control. • Demonstrated written and oral communication skills reviewing and editing established database policies and procedures and developing new SOPs for database software installation and configuration. • Experience with Cloud(AWS/Azure/OCI) migrations (DB a...

    €2428 (Avg Bid)
    €2428 Ortalama Teklif
    4 teklifler

    I am in need of a proficient and experienced website developer to create a high-quality business website for me. you will be paid on completion for work when it is availab...functionalities Content Specification: I will be responsible for providing all necessary content for the website, relieving the developer of this task. Ideal Skills and Experience: - Proven experience in developing business websites - Sound knowledge and practice of UX/UI principles - Strong experience integrating user reviews and ratings functionality Freelancers with a portfolio of previous similar projects will be preferred. Respect for deadlines and attention to detail are critical for this project. Please only bid if you're comfortable with these requirements. Looking forward to doing excellent...

    €581 (Avg Bid)
    €581 Ortalama Teklif
    109 teklifler

    ...Covering Estimators. The successful candidate will have extensive experience in the construction industry and be proficient in estimating materials, labor, and other costs associated with flooring projects, including resilient floors, vinyl, hardwood, VCT, LVT, LVP, floor leveling and preparation, concrete leveling and polishing, and tile work. The Virtual Assistant will be responsible for accurately estimating project costs, managing timelines, and ensuring client satisfaction. Responsibilities: Conducting quantity takeoffs and producing accurate and detailed cost estimates for flooring projects Analyzing project requirements and specifications to ensure that all materials, labor, and other costs are accounted for Coordinating with clients, project managers, and other s...

    €46 (Avg Bid)
    €46 Ortalama Teklif
    27 teklifler

    I'm searching for an all-around superstar in web development, graphic design, and content writing. You will work on a series of projects intended to boost website traffic, improve user experience, and generate more leads to cater to our primary demographic – small business owners in the U.S. Ideal skills and experience: * Vast knowledge in web development * Proficiency in modern graphic design techniques * Excellent content writing and editorial skills * An understanding of digital marketing strategies * Prior experience working for or with small businesses in the USA. You should have a strong grasp of current trends in web design, graphic design, and content creation. Strong communication skills are a must, as well as the ability to work independently and meet deadlin...

    €22 / hr (Avg Bid)
    €22 / hr Ortalama Teklif
    15 teklifler

    I'm looking for seasoned coders that excel in Perl, to reconfigure my current Perl email script. The primary aim is to make it efficient in sending out emails using Google's SMTP. Key Deliverables: - Modify Perl script to use Google's SMTP via the Net::SMTP::SSL or Email::Send::SMTP::Gmail modules - Integrate secure connection to Gmail - Integrate Email authentication No requirement for handling attachments is necessary. Need to understand how the forms work. Proficiency in Perl, understanding of SMTP protocols, specifically Google's SMTP, and experience with Net::SMTP::SSL and Email::Send::SMTP::Gmail modules are crucial for success in this task.

    €14 (Avg Bid)
    €14 Ortalama Teklif
    2 teklifler

    I need a skilled PERL developer to create a compact and secure script to automate the login process to a banking site. The purpose of the script is to extract data from the first page subsequent to a successful login. This will require the following: - Deactivating a "security keyboard" with one click - Inputting the login credentials stored in variables - Navigating to a given page of the website - Perl 5 on Linux The banking site utilizes Ansible and JavaScript, so an understanding and experience of these technologies is ideal. Lastly, once the relevant data has been successfully extracted, it should be stored in an array for further processing. No file or display output is required at this stage. Skills required for this task are proficiency in scripting wit...

    €29 (Avg Bid)
    €29 Ortalama Teklif
    5 teklifler

    Hi Raju, We have a few tasks for multiple projects and we will try to monitor per hour basis.

    €9 / hr (Avg Bid)
    €9 / hr Ortalama Teklif
    1 teklifler

    I'm seeking a versatile videographer experienced in shooting a range of video types such as podcasts, content videos, and event videos. These projects will be extensive, with each piece estimated to last over 30 minutes. Ideal Experience and Skills: - Proficient in filming in varying environments, as the projects will cover both location and studio shoots. - Experienced in shooting long-duration video content, comfortable with timeframes exceeding 30 minutes. - Ability to capture compelling narratives, regardless of the video type. This is an excellent opportunity for a videographer who enjoys diverse assignments and has a knack for long-duration content creation.

    €256 (Avg Bid)
    Yerel
    €256 Ortalama Teklif
    8 teklifler

    I'm seeking skilled Perl coders to modify my email script. This script currently sends out emails well after a web form submission using the Net::SMTP::SSL module. Success in this project will mean updating the script to instead utilize the Email::Send::SMTP::Gmail module. Ideal Skills: - Proficient in Perl coding - Familiarity with Net::SMTP::SSL and Email::Send::SMTP::Gmail modules - Understanding of Google SMTP Key Responsibilities: - Reconfigure Perl script to work with Email::Send::SMTP::Gmail module - Ensure the script remains efficient for sending out web form submission emails - Test script after modifications to verify seamless integration with Gmail SMTP

    €23 (Avg Bid)
    €23 Ortalama Teklif
    9 teklifler

    I'm in need of a video editor who is proficient in editing different types of videos, including wedding ceremonies, corporate events, and social media clips. Key Criteria: - Experience in editing videos of various genres to a length of 5-10 minutes each. - Excellent skills in applying cinematic and documentary style editing techniques are crucial. All in all, your task will be to transform raw footage into compelling video productions that will captivate the assigned target audience. Previous experience in these areas of video editing and a high level of creativity will greatly increase your chances of securing this project. A keen eye for detail and a knack for storytelling are also a huge plus. Let us create stunning visuals together.

    €119 (Avg Bid)
    €119 Ortalama Teklif
    34 teklifler

    I need a proficient Wordpress programmer for regular website projects. Responsibilities will include: - Developing 2 to 5 websites per month based on my own template or one purchased on TemplateMonster - Custom templates are created based on ready-made graphic designs in figma, without using auto layout. - Selecting and advising on plugins for custom functionality - Writing custom small plugins for woocommerce Ideal skills: - Proficiency in Wordpress. - Experience in e-commerce integration. - Ability to create custom themes. - Ability to optimize e-commerce websites and stores - Good knowledge of English min. B2

    €5 / hr (Avg Bid)
    €5 / hr Ortalama Teklif
    29 teklifler

    Send me freelancer projects I'll pay $10 for each project plus 80% of the earnings from it. I do all the work you get $10 + 80%. Message for more details.

    €461 (Avg Bid)
    €461 Ortalama Teklif
    1 teklifler

    Send me freelancer projects I'll pay $10 for each project plus 80% of the earnings from it. I do all the work you get $10 + 80%. Message for more details.

    €7 - €21
    €7 - €21
    0 teklifler

    We're in need of a Dedicated Slovakian Interpreter who can accompany one of our representatives to business meetings throughout Slovakia in recycling facilities. No past experience in recycling is necessary, but it is crucial that you have excellent interpersonal skills and key account management experience. Key Responsibilities: - Attending business meetings across various locations in Slovakia - Providing clear interpretations between English and Slovakian -write followup letters -do basic internet research in the Slovakian recycling market. Ideal Skillset: - Fluency in both English and Slovakian - Excellent interpersonal skills - Key account management experience - Willingness to travel across Slovakia We are open to interpreters with diverse professional backgrounds, as the in...

    €6 - €12 / hr
    Yerel
    €6 - €12 / hr
    0 teklifler

    ...looking for a professional who can with a digital agency and coordinate different website projects across various website types - Ecommerce, Informational, Commercial and Portals/platforms Key responsibilities would include: - Communication: requirement gathering from clients, and coordinate with team of developers and designers. - Content writing: content writing/editing, layout and curating for websites. - Follow up, organize and ensure meeting deadlines. - Have good background in digital marketing overall An ideal candidate should possess: - A diverse understanding of website genres including E-commerce, Informational, Commercial, and Portals; - A proven track record in juggling varied website projects simultaneously; - Good command of English language - Attent...

    €433 (Avg Bid)
    €433 Ortalama Teklif
    41 teklifler