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I've the following file:
1 2 3 1 4 5 1 6 7 2 3 5 5 2 1 and I want that the file be sorted for the second column but from the largest number (in this case 6) to the smallest. I've tried with
sort +1 -2 file.dat but it gives me the inversed order.
The results should be:
1 6 7 1 4 5 2 3 5 5 2 1 1 2 3 
721
How to sort in reverse order. To sort in reverse order pass the -r option to sort . This will sort in reverse order and write the result to standard output.
2. -r Option: Sorting In Reverse Order: You can perform a reverse-order sort using the -r flag. the -r flag is an option of the sort command which sorts the input file in reverse order i.e. descending order by default. Example: The input file is the same as mentioned above.
To reverse the listing of files by name, add the -r (reverse) option. This will be like turning the normal listing upside down.
Sort a File Numerically 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.
sort -nrk 2,2 does the trick.
n for numeric sorting, r for reverse order and k 2,2 for the second column.
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