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Related to command: DOS command
1. A performance, such as a play, ballet, opera, etc., that is presented at the behest of royalty or a head of government. The theater troupe was always at the ready to give a command performance, should the queen so desire it.
2. By extension, any task or activity (typically outside of normal work duties) that one undertakes or performs at the request of someone in a position of authority. When I was an intern, I always had to give command performances for visiting businessmen, such as taking them out to dinner or arranging entertainment for them during their stay.
3. Any obligatory occasion or situation that one is required or expected to attend, as at the behest of an employer or person of authority. These fundraising dinners, though technically "optional," are really command performances for the members of staff.
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chain of command
Fig. the series or sequence of holders of responsibility in a hierarchy. The only way to get things done in the military is to follow the chain of command. Never try to go straight to the top.
have a good command of something
to know something well. Bill has a good command of French. Jane has a good command of economic theory.
He that cannot obey cannot command.
Prov. If you want to become a leader, you should first learn how to follow someone else. Jones can't seem to do anything I ask him to. He'll never get anywhere; he that cannot obey cannot command.
An occasion that one is obliged to attend, as in My boss's invitations to dinner are always a command performance. This term originally (late 1800s) denoted a theatrical or musical performance presented at the behest of a sovereign or head of state. By the 1930s it was also used figuratively for any more or less obligatory occasion or performance.
See also: command
have a good command of
Have the ability to use or control; have mastery of. For example, She has a remarkably good command of Japanese, or He had a good command of his emotions. [Mid-1600s]