Amazon Style Interview Question
Bash Magic: Cracking the Amazon DevOps Log Parsing Interview! ?
A classic Amazon DevOps interview favorite tests your ability to parse Nginx access logs to find the top 10 URLs throwing 5xx server errors ; a task that instantly trips up unprepared candidates due to how awk handles default whitespace splitting. Because spaces exist inside timestamp brackets and HTTP request quotes, standard field numbering shifts, meaning you must carefully map out that the URL actually sits in field 7 ($7) and the status code in field 9 ($9). The winning, precise solution is to isolate field 9 with an anchored regex ($9 ~ /^5/) to target only the 5xx family, print the corresponding URL, and pipe the output through sort | uniq -c | sort -rn | head -10 to generate a clean, descending count of the worst-offending endpoints.
This exercise perfectly evaluates your real-world text-processing precision, command piping fluidity, and ability to avoid false positives from matching random numbers across an entire log line.
#DevOps #AWS #Bash #Linux #awk #CodingInterview #SysAdmin #Nginx #SRE #ShellScripting #TechTips #CommandLine #SoftwareEngineering
A classic Amazon DevOps interview favorite tests your ability to parse Nginx access logs to find the top 10 URLs throwing 5xx server errors ; a task that instantly trips up unprepared candidates due to how awk handles default whitespace splitting. Because spaces exist inside timestamp brackets and HTTP request quotes, standard field numbering shifts, meaning you must carefully map out that the URL actually sits in field 7 ($7) and the status code in field 9 ($9). The winning, precise solution is to isolate field 9 with an anchored regex ($9 ~ /^5/) to target only the 5xx family, print the corresponding URL, and pipe the output through sort | uniq -c | sort -rn | head -10 to generate a clean, descending count of the worst-offending endpoints.
This exercise perfectly evaluates your real-world text-processing precision, command piping fluidity, and ability to avoid false positives from matching random numbers across an entire log line.
#DevOps #AWS #Bash #Linux #awk #CodingInterview #SysAdmin #Nginx #SRE #ShellScripting #TechTips #CommandLine #SoftwareEngineering
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