Here are six sample cover letters for a position related to "linux-admin" along with the required information filled in for each position:

### Sample 1
**Position number:** 1
**Position title:** Linux Systems Administrator
**Position slug:** linux-admin
**Name:** John
**Surname:** Doe
**Birthdate:** 1985-04-15
**List of 5 companies:** Apple, Dell, Google, IBM, Red Hat
**Key competencies:** System administration, shell scripting, network configuration, cloud services (AWS/Azure), security compliance.

---

[Your Address]
[City, State, Zip]
[Email Address]
[Phone Number]
[Date]

[Hiring Manager's Name]
[Company Name]
[Company Address]
[City, State, Zip]

Dear [Hiring Manager's Name],

I am writing to express my interest in the Linux Systems Administrator position at [Company Name] as advertised. With over 6 years of hands-on experience in managing Linux environments, coupled with my ability to streamline server operations, I believe I am a fitting candidate for this role.

In my previous position at Dell, I was responsible for maintaining over 300 Linux servers, implementing security protocols, and optimizing system performance. My proficiency in shell scripting has allowed me to automate repetitive tasks, leading to a 30% increase in operational efficiency.

I am particularly drawn to the opportunity at [Company Name] because of your commitment to innovative technology solutions. I am excited about the prospects of using my skills in system administration and cloud services to contribute to your team.

Thank you for considering my application. I look forward to the opportunity to discuss how my background, skills, and enthusiasms align with the needs of your team.

Sincerely,
John Doe

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### Sample 2
**Position number:** 2
**Position title:** Senior Linux Administrator
**Position slug:** linux-admin
**Name:** Alice
**Surname:** Smith
**Birthdate:** 1988-07-22
**List of 5 companies:** Google, IBM, Oracle, VMware, Cisco
**Key competencies:** Advanced Linux administration, troubleshooting, virtualization, performance tuning, database management (MySQL/PostgreSQL).

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[Your Address]
[City, State, Zip]
[Email Address]
[Phone Number]
[Date]

[Hiring Manager's Name]
[Company Name]
[Company Address]
[City, State, Zip]

Dear [Hiring Manager's Name],

I am very excited to submit my application for the Senior Linux Administrator position at [Company Name]. With my extensive background in Linux administration and my passion for technology, I am confident that I would make a significant contribution to your IT team.

For the past 8 years at Google, I have successfully managed a high-availability Linux infrastructure supporting critical applications. My experience includes performance tuning, virtualization using VMware, and database management. I effectively reduced system downtime by implementing meticulous monitoring and proactive troubleshooting strategies.

The innovative projects at [Company Name] greatly interest me, and I am eager to leverage my expertise to drive efficient and secure Linux operations for your organization.

Thank you for the opportunity to apply. I look forward to the possibility of discussing my candidacy further.

Warm regards,
Alice Smith

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### Sample 3
**Position number:** 3
**Position title:** Junior Linux Administrator
**Position slug:** linux-admin
**Name:** Mark
**Surname:** Johnson
**Birthdate:** 1992-01-30
**List of 5 companies:** Red Hat, Amazon, DigitalOcean, Rackspace, HP
**Key competencies:** Basic Linux commands, network setup, user management, backups and recovery, monitoring tools (Nagios/Zabbix).

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[Your Address]
[City, State, Zip]
[Email Address]
[Phone Number]
[Date]

[Hiring Manager's Name]
[Company Name]
[Company Address]
[City, State, Zip]

Dear [Hiring Manager's Name],

I am writing to apply for the Junior Linux Administrator position at [Company Name]. With my recent certification in Linux System Administration and hands-on experience in my lab environment, I am excited to begin my career in Linux administration.

During my internship at Amazon, I assisted the IT team in managing user accounts, performing backups, and troubleshooting basic network issues. I am proficient in monitoring tools like Nagios and eager to learn and grow within a dynamic organization like [Company Name].

I am excited about the chance to contribute to your team and learn from the experienced professionals at [Company Name]. Thank you for considering my application. I look forward to the opportunity for an interview.

Best,
Mark Johnson

---

### Sample 4
**Position number:** 4
**Position title:** Linux Administrator
**Position slug:** linux-admin
**Name:** Sarah
**Surname:** Williams
**Birthdate:** 1990-10-05
**List of 5 companies:** IBM, Google, Microsoft, Oracle, Twitter
**Key competencies:** System performance optimization, shell scripting, disaster recovery, network security, open-source technologies.

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[Your Address]
[City, State, Zip]
[Email Address]
[Phone Number]
[Date]

[Hiring Manager's Name]
[Company Name]
[Company Address]
[City, State, Zip]

Dear [Hiring Manager's Name],

I am excited to apply for the Linux Administrator position at [Company Name]. With my solid foundation in Linux system performance optimization and my keen interest in open-source technologies, I believe I would be an asset to your team.

At IBM, I was heavily involved in routine system maintenance, performance tuning, and disaster recovery planning across multiple Linux distributions. My initiative in scripting automated tasks not only improved system reliability but also freed up time for innovative projects.

I admire [Company Name]'s focus on leveraging technology for growth, and I look forward to potentially joining your esteemed organization. Thank you for your time and consideration.

Sincerely,
Sarah Williams

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### Sample 5
**Position number:** 5
**Position title:** DevOps/Linux Administrator
**Position slug:** linux-admin
**Name:** Robert
**Surname:** Brown
**Birthdate:** 1983-11-15
**List of 5 companies:** Google, AWS, Atlassian, Docker, GitHub
**Key competencies:** Continuous integration, containerization (Docker), monitoring and logging, automation, cross-functional collaboration.

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[Your Address]
[City, State, Zip]
[Email Address]
[Phone Number]
[Date]

[Hiring Manager's Name]
[Company Name]
[Company Address]
[City, State, Zip]

Dear [Hiring Manager's Name],

I am thrilled to apply for the DevOps/Linux Administrator role at [Company Name]. With my background in systems administration and development operations, I have honed my skills in creating efficient and automated processes that drive productivity.

In my previous role at AWS, I played a key part in implementing CI/CD pipelines that significantly shortened deployment times. By leveraging Docker for containerization and enhancing monitoring practices, I was able to ensure system reliability and streamline workflows across teams.

I am excited about the innovative culture at [Company Name] and am eager to bring my skills in continuous integration, automation, and cross-functional collaboration to your team.

Thank you for considering my application. I am looking forward to discussing how I can contribute to the success of [Company Name].

Best regards,
Robert Brown

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### Sample 6
**Position number:** 6
**Position title:** Linux Network Administrator
**Position slug:** linux-admin
**Name:** Emily
**Surname:** Garcia
**Birthdate:** 1987-12-12
**List of 5 companies:** Cisco, Red Hat, VMware, HP, Juniper Networks
**Key competencies:** Networking fundamentals, server configuration, firewall management, IT security, VPN technologies.

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[Your Address]
[City, State, Zip]
[Email Address]
[Phone Number]
[Date]

[Hiring Manager's Name]
[Company Name]
[Company Address]
[City, State, Zip]

Dear [Hiring Manager's Name],

I am very interested in the Linux Network Administrator position at [Company Name]. With a solid grasp of networking fundamentals and a rich background in Linux server configuration, I am eager to contribute my skills to your team.

During my time at Cisco, I successfully managed and secured Linux-based networks, implementing various firewall strategies and VPN solutions. This experience honed my ability to communicate effectively with both technical and non-technical team members, working collaboratively to achieve project goals.

I am particularly impressed by [Company Name]'s commitment to IT security and network optimization, making it an exciting place for me to contribute my expertise. Thank you for considering my application; I look forward to the possibility of discussing this opportunity with you.

Sincerely,
Emily Garcia

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Each cover letter is tailored to reflect the unique experiences and competencies relevant to a Linux Administrator role, demonstrating how the candidate aligns with the expectations of potential employers.