What are the most important OS level Commands in sap? Sap Os level commands

dpmon d	Dispatcher queue monitor
Sapdba (up to SAP R/3 -4.7)/ brtools	database administration
PS	Running work process
ps -eaf|grep dw	process overview
ps -eaf|grep ora	check oracle service is running
Ps –eaf | grep dw kill -9	Kill work process
msmon pf=profile path name=sid	to check the message server status
gwmon pf=profile path nr=num	to check the gateway status
Ps –eaf | grep lsnrctl	Listener status
Rslgview pf =-r –ft | pg	System logs
Disp + work –v	to check the version of r3 kernel
R3trans –d ,tnsping	Checking the connection with database
Df –k	File system monitor
Du –k	Display all directories and size of current directory
Svrmgrl Connect internal//(old versions) --------------------------------------------- Sqlplus “/as sysdba” (new versions)	SQL prompt and database connection ------------------------------------------------- SQL prompt and database connection
Saplicence  -get	to get hardware key
saplicense -install	to install license
sappfpar all pf=profile path	display all profile parameters
sappfpar check path=profile path	checks the required space for memory
memlimits	to check the available space for heap and swap memory
telnet	Remote system login
telnet <ipaddress><dispatcherportnum>	to check the remote sap system is up and running
ftp	file transfer protocol
rcp	remote copy of files
Start/stop sap	Start / stop Sap instance
ping	check destination host reachable
niping	check connection between server and a client by transferring packets
systeminfo	check the configuration of system
Ps -aef	Processes status
lsps -a	Swap space
topas	Memory