DBA Unix commands | symbol is for combine and filter the results like we use in Power Shell pipe out. R is for recursive & grep command is used to search text ps -ef |grep pmon – Get the running user process. ps -ef |grep smon – Get the running user process. Disk related commands: # df -h {-m,-k} -- Disk free # du -h /opt -- Disk usage for Particular mount point disk # pwd -present working directory # cd /opt - change directory # ls - list the files and folders -l -long list like a windows properties -lt - long list with time -ltr - long list…