Number of opened files

Permit number of opened files:

ulimit -n


For each docker's PID of user root:

cc=0; for ii in $( ps aux | grep docker | grep -v grep | awk '{ print $2 }' ); do nn=$(lsof -p $ii | wc -l); cc=$(( cc + nn )); done; echo "Celkem: $cc"


For user:

lsof -u root | wc -l
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