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I would like to know which sorting algorithm the linux SORT command uses?
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The sort command is a command-line utility for sorting lines of text files. It supports sorting alphabetically, in reverse order, by number, by month, and can also remove duplicates.
To sort a file containing numeric data, use the -n flag with the command. By default, sort will arrange the data in ascending order. If you want to sort in descending order, reverse the arrangement using the -r option along with the -n flag in the command.
The sort command is used in Linux to print the output of a file in given order. This command processes on your data (the content of the file or output of any command) and reorders it in the specified way, which helps us to read the data efficiently.
To list all files and sort them by size, use the -S option. By default, it displays output in descending order (biggest to smallest in size). You can output the file sizes in human-readable format by adding the -h option as shown. And to sort in reverse order, add the -r flag as follows.
It1 uses mergesort rather than quicksort or heapsort for two reasons:
1. Linux distros are free to choose their own sort utility but I imagine virtually all use GNU sort so I have described that.
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An External R-Way merge sort according to Algorithm details of UNIX Sort Command. Found via this stackoverflow question.
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