Linux system monitoring parameters

View the number of CPU cores for Linux system monitoring parameters cat/proc/cpuinfo | grep & quot; cpucores & quot; | uniq view CPU model cat/proc/cpuinfo | grep & amp; #39; modelname & amp; #39; | uniq view total memory cat/proc/meminfo | grepMemTotal. linux system monitoring parameter viewing CPU cores cat/proc/cpuinfo | grep "cpu cores" | uniq viewing CPU model cat/proc/cpuinfo | grep 'model name' | uniq viewing total memory cat /proc/meminfo | grep MemTotal View Disk size fdisk-l | grep Disk process and Port View all processes and port usage: netstat-apn or netstat-tnl check port usage: Netstat-apn grep 8080 port concurrent connection: netstat-n | grep 80 | awk '/^ tcp/{++ S [$ NF]} END {for (a in S) print a, S [a]} 'view Tomcat process: ps-aux | grep tomcat view nginx concurrent (number of connections) process count: ps-ef | grep nginx | wc-l check the number of established connections in the network connection status: netstat-na | grep ESTABLISHED | wc-l check the number of connections in various states of the system tcp connection netstat-an | awk '/^ tcp/{++ S [$ NF]} END {for (a in S) print a, S [a]} 'output the number of connections to each ip address and the total number of connections in each status. Netstat-n | awk '/^ tcp/{n = split ($ (NF-1), array, ":"); if (n <= 2) ++ S [array [(1)]; else ++ S [array [(4)]; ++ s [$ NF]; ++ N} END {for (a in S) {printf ("%-20 s % s \ n", a, S [a]); + + I} printf ("%-20 s % s \ n", "TOTAL_IP", I); for (a in s) printf ("%-20 s % s \ n", a, s [a]); printf ("%-20 s % s \ n", "TOTAL_LINK ", N );} 'disk management df-hl View disk usage df-hl view remaining disk space df-h view partition size of each root path du-sh [directory name] return the size of the directory du -sm [folder] returns the total number of MB in the folder. find [folder]-type f-print | wc-l queries the number of files in the directory.