We all are always worry about memory weather it is main memory, secondary, or other swap
These are few command which help u to debug your memory.
Simple stat.
#free
#du -h
#df -h
Some complex stat.
#cat /proc/meminfo
#dmesg | grep -n kernel
This command give you files have more than 100M usages.
#find / -size +100M -fprintf /root/big.txt '%-10s %p\n'
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