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Display memory usage top
#!/bin/bash
# Display the top five applications memory users
# http://www.cyberciti.biz/faq/linux-check-memory-usage/#comment-51021
free -hto
echo ''
while read command percent rss; do if [[ "${command}" != "COMMAND" ]]; then rss="$(bc <<< "scale=2;${rss}/1024")"; fi; printf "%-26s%-8s%s\n" "${command}" "${percent}" "${rss}"; done < <(ps -
A --sort -rss -o comm,pmem,rss | head -n 20)
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