commandexplanationmore info
whoamireturns current userman
lsmodShow the status of modules in the Linux Kernelman
dmesgprint or control the kernel ring bufferman
usermodmodify a user accountman
groupmodmodify a group definition on the systemman
chownchange file owner and groupman
fdiskmanipulate disk partition tableman
mountmount a filesystemman
hwinfoprobe for hardwareman
sysctlconfigure kernel parameters at runtimeman
systemctlControl the systemd system and service managerman
ifconfigconfigure a network interfaceman
ipshow / manipulate routing, network devices, interfaces and tunnelsman
digDNS lookup utilityman
pstreedisplay a tree of processesman