Vladimir Cicovic Blog - Vladimir Cicovic - Security, Programming, Puzzles, Cryptography, Math, Linux

SadServer Solutions - Saskatoon

Solution for Saskatoon Command:


awk '{print $1}' access.log | sort | uniq -c | sort -r | head -20

With awk, we pickup first field from the line - that is IP address. Second command - make sort this lines so next one command uniq could easy count (that is -c) and sort -r will set reverse list from highest to lower counts of IPs

Count ips Count of IPs from access log

SadServer Solutions - Saint John task

For the task https://sadservers.com/scenario/saint-john there is easy solution by usage of tool called lsof (short for list list open files) where man pages https://man7.org/linux/man-pages/man8/lsof.8.html gives details of usage. Take notice here: I use command kill -9, but in case of important tasks like email servers and similar where are data valuable please use kill -15

Solution in one picture:

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SadServer Solutions

I'm solving SadServers Challenges!

I've decided to dive into the world of SadServers challenges (https://sadservers.com/scenarios)! This platform offers a variety of system administrator scenarios that test your troubleshooting skills and Linux knowledge.

With over 26 years of experience, I've encountered a wide range of Linux issues, including the infamous "Out of Memory" (OOM) problems with drivers.

Here's the exciting part:

I'll be tackling these challenges and sharing my solutions right here! The first one will be published today, June 7th, 2024, and I'll keep this page updated with links to all my future solutions.

Stay tuned for some in-depth troubleshooting and Linux problem-solving!

Easy

Saint John - Easy - solution: https://www.vladimircicovic.com/2024/06/sadserver-solutions-saint-john-task

Saskatoon - Easy solution: https://www.vladimircicovic.com/2024/06/sadserver-solutions-saskatoon

Santiago - Easy solution: https://www.vladimircicovic.com/2024/06/sadserver-solutions-santiago

Command line murderers - Easy solution: https://www.vladimircicovic.com/2024/06/sadserver-solutions-command-line-murderes

Taipei - Easy solution: https://www.vladimircicovic.com/2024/06/sadserver-solutions-taipei

Lhasa - Easy math solution: https://www.vladimircicovic.com/2024/06/sadserver-solutions-lhasa

Bucharest - Easy, Postgres solution: https://www.vladimircicovic.com/2024/06/sadserver-solutions-bucharest

Bilbao - Easy Kubernetes issue solution: https://www.vladimircicovic.com/2024/06/sadserver-solutions-biblao-k8s-task

Apia - Easy file tools usage solution: https://www.vladimircicovic.com/2024/06/sadserver-solutions-apia-task

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