list all installed packages

dpkg --get-selections | grep -v deinstall

dpkg-query -l


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npm list -g --depth=0

npm list [[@<scope>/]<pkg> ...] npm ls [[@<scope>/]<pkg> ...] npm la [[@<scope>/]<pkg> ...] npm ll [[@<scope>/]<pkg> ...]
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disk used



du -shc /home/*

df
df -a
df -h