Sorting on 2nd field comes into picture only when 1st field value is same. In case of Linux in 1st field, you could see the 2nd field values are sorted numerically. How could be just obtain the 1st field after sorting with 2nd field? Still U haven't discussed about the '.
However I loved the stuff and helped me out. Thursday, August 16, 15 examples of sort command in Linux. By default, the sort command sorts file assuming the contents are ascii. Using options in sort command, it can also be used to sort numerically. Even if the file have had 10 'Linux' records, with -u option, only the first record is retained.
If the file had not contained '', the default sort would have given proper result. However, it is incorrect to sort a numerical file in this way since the sorting logic is incorrect. With this, the output is now sorted, merged and without duplicate records. The format of '-k' is : '-km,n' where m is the starting key and n is the ending key.
In other words, sort can be used to sort on a range of fields just like how the group by in sql does. In our case, since the sorting is on the 1st field alone, we speciy '1,1'. Similarly, if the sorting is to be done on the basis of first 3 fields, it will be: '-k 1,3'.
This got me to use the man pages :p "-g, --general-numeric-sort, compare according to general numerical value" which was what I needed in my case.
No, by default sort columns are blank separated, they are not character columns, to sort on the 3rd character column, the syntax would be: sort -k 1. The awk solution is exactly what I needed-- easily modified to fit complex sorting requirements — jchook. You can use the awk Velour library :! Zombo Zombo 5, 5 5 gold badges 39 39 silver badges 58 58 bronze badges.
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The Overflow Blog. Podcast Making Agile work for data science. Stack Gives Back Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. Linked 3. Related 5. Hot Network Questions. Sort command in Unix is a very useful and most used command in shell scripting to filter the input contents and to print the output to stdout format.
Let us suppose we have created a filename called testing. If we have data in the files both in upper and lower case, by default, the sort command will sort the data first in upper case and then to lower case, as shown below. Sort command with options can be used in several ways. A few of the options for sort are listed below with examples:.
This option sorts the given input in a reverse way which is by default in descending order. This command is used to sort the numeric contents present in the file. By default, it sorts in ascending order. This option in sort helps to sort the numeric contents in the file in reverse order. By default, the numeric data in reverse order gives the contents in descending order. Option -k gives us the option to sort a table in the order of column number.
The output of this option will give us the result if it is not sorted. If there is no output, that means the contents in the files are already sorted. It will also give us the line number where the content is not sorted.
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