How to check and free up RAM on Linux
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My server is running slow. How do I check memory usage and free up RAM?
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security_pro
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# Check memory usage
free -h
# Detailed view
cat /proc/meminfo
# Top memory consumers
ps aux --sort=-%mem | head
# Clear cache (use carefully)
sudo sync
sudo echo 3 > /proc/sys/vm/drop_caches
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