Memory, cpu, system info linux

Memory :--
df -h
free -m
vmstat
cat /proc/meminfo [use grep]

CPU
uptime
top -b -n 1
cat /proc.cpuinfo [use grep]

SYS INFO
dmesg
lspci


lsof /dev/disk
tcpdump 'host 192.168.4.13'
nmap 192.168.4.13
lsb_release
lsusb
netstat -ia
arp -a
arp -a 192.168.4.13
dmidecode | grep -A 5 "Base Board"
uname -a
uname -s
uname -n
uname -m
uname -p
uname -i
uname -o
uname -a