The phrase "a proper command" is correct and usable in written English.
You can use it when referring to a command that is appropriate, suitable, or correctly formulated in a specific context.
Example: "In order to execute the task successfully, you need to issue a proper command to the system."
Alternatives: "an appropriate command" or "a suitable command".
He discussed his problems with Adorno and Max Horkheimer, who convinced him he could not write about capitalism without a proper command of Marx.
During the Revolution, when he told his officers to "be easy... but not too familiar lest you subject yourself to a want of that respect, which is necessary to support a proper command," he was doing nothing out of the ordinary.
This question is relevant because a proper command of basic skills is a necessary condition for an active and independent life, for updating and extending advanced skills and competences and for remaining competitive in the labour market, but also for being able to access administrative, financial and health services and to profit from the broad range of advantages offered by the new technologies.
Despite the militarisation of the population, the Albanian defence system was massively inefficient and took little account of the country's real defence needs; training was minimal, fuel and ammunition were scarce, uniforms and equipment were of poor quality, weapons were antiquated and the military lacked a proper command and control system.
In networked control systems, uncontrollable events may unexpectedly occur at a plant before a proper control command is applied to it due to communication delays.
Governor Dinwiddie was publicly supportive of Washington, but criticized him privately, noting that some of the Virginia Regiment's problems originated in a "want of proper Command".
It is therefore an issue to be addressed in future studies how different kinds of vesicles have proper command of distinct tethering and/or fusion machineries.
These include army engineers and logisticians, field hospitals and nurses, heavy-lift aircraft and transport helicopters, as well as proper command-and-control and intelligence-gathering: in other words, the wherewithal of modern Western expeditionary forces.
With these three parameters, a high-resolution (2000 individual points) curve was calculated and numerically differentiated twice using the proper commands in the statistical program "R" (R Development Core Team, 2011).
Learn how to give your horse the proper commands.
Getting to know the proper commands before you ride the camel will help you know what to say when you need to calm it down.
