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Q.486	Software::OS::Unix::Linux::Commands::date:: How to format the output of the date command.
Q.502	Software::OS::Unix::Linux::Commands::du:: How to check disk usage under a folder tree.
Q.1953	Software::OS::Unix::Linux::Commands::ps:: How to show the full long username in the output of ps command.
Q.1596	Software::OS::Unix::Linux::commands::chpasswd:: How to change user password non interactively using chpasswd.
Q.1620	Software::OS::Unix::Linux::commands::ethtool:: How to use ethtool to query or configure Network Interface settings such as speed and duplex.
Q.1463	Software::OS::Unix::Linux::commands::grep:: How to use grep tr and cut to extract the IP address only from ifconfig command.
Q.1571	Software::OS::Unix::Linux::commands::grep:: how to use grep to search for a keyword and display the filename, line number and the matching line text.
Q.1701	Software::OS::Unix::Linux::commands::lsof:: How to use lsof to identify process or processes accessing a file or filesystem.
Q.1849	Software::OS::Unix::Linux::commands::nc:: How to use nc as substitute for telnet to do connectivity test to remote IP and port.
Q.44	Software::OS::Unix::Linux::commands::sshpass:: What is sshpass and how to use it.
Q.2048	Software::OS::Unix::Linux::commands::su:: How is the use of su command controlled.
Q.1220	Software::OS::Unix::Linux::commands::sudo:: How to enable user1 to run su - without requiring password.
Q.1337	Software::OS::Unix::Linux::commands::sudo:: How to have allow multiple commands without password and also commands with parameters.
Q.1991	Software::OS::Unix::Linux::commands::sudo:: What is the syntax of sudoers polify file and how to troubleshoot sudo.
Q.1708	Software::OS::Unix::Linux::commands::vi:: How to turn on or turn off vim syntax highlighting with color fonts.