Level 99: The Script Vault | Tech Knowledge Hub

Find Large Files (>100MB) BASH

find / -type f -size +100M -exec ls -lh {} \; | awk '{ print $9 ": " $5 }'

Simple HTTP Server PYTHON

# Run in any directory to serve files
python3 -m http.server 8000

List all S3 Buckets and Sizes AWS CLI

aws s3 ls | awk '{print $3}' | xargs -I {} sh -c 'echo {}; aws s3 ls --summarize --human-readable --recursive s3://{} | grep "Total Size"'

Find Duplicate Rows SQL

SELECT email, COUNT(*)
FROM users
GROUP BY email
HAVING COUNT(*) > 1;

Monitor Log File (Real-time with Search) BASH

# Watch log and highlight "ERROR"
tail -f /var/log/syslog | grep --line-buffered --color=auto "ERROR"