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jcal:tldr:cc3d7
The given command "jcal ${year} ${month}" is a command-line command that utilizes the "jcal" command, which is typically used in Unix-like operating systems to display a Julian calendar.
Here's a breakdown of the elements in the command:
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"jcal": This is the actual command that is used to display the Julian calendar. It is followed by the year and month parameters.
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"${year}": This is a placeholder for the year parameter. The "$" symbol is used to denote a variable in a command-line context. The actual year value should be specified in place of "${year}" when using the command.
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"${month}": This is a placeholder for the month parameter. Similar to the year parameter, the "$" symbol denotes a variable, so the actual month value should be specified in place of "${month}" when executing the command.
By substituting the appropriate values for "${year}" and "${month}", the command will generate and display the Julian calendar for the specified year and month.