It also provides an option —reverse or -r to reverse the sorting order and can be used in conjunction with any and all of the sorting options. By default, the ls command sorts by name: that is file name or the folder name. By default the files and folders are sorted together. If you prefer to sort the folders separately and be displayed before the files, then you can use the —group-directories-first option.
This will sort the output by the last modified time with the newest being listed first. In order to sort the output list by the oldest file, you can use the —reverse -r option. You can sort the contents by size of the file with the largest size being listed first, by using the -S option.
You can sort the output to show the smallest file first by using the reverse -r option. Another option -X provides the ability to sort by extension. This allows you to display files grouped by extensions.
Though ls provides some sorting options as mentioned above, it does not have the ability to sort by many of the other file attributes, such as owner name or group name. Probably not. When you add the -n option, the numerical value of the string is now being evaluated rather than only the first character. Now, you can see below that our list is properly sorted. For this one, I am going to use our distro list again.
The reverse function is self-explanatory. It will reverse the order of whatever content you have in your file. If you accidentally mashed your shift key while attempting the reverse function, you might have gotten some strange results.
Sort also has built in functionality to arrange by month. It recognizes several formats based on locale-specific information. I tried to demonstrate some unqiue tests to show that it will arrange by date-day, but not year.
Month abbreviations display before full-names. As I mentioned earlier, sort does not change the original file by default. If you need to save the sorted content, it can be done. Caution: If you try to direct your sorted data to the same file, it will erase the contents of your file.
If you use cat command on the output file, this will be its contents:. If you have a table in your file, you can use the -k option to specify which column to sort. I added some arbitrary numbers as a third column and will display the output sorted by each column. Options are added following the column number. If you have a file with potential duplicates, the -u option will make your life much easier. Remember that sort will not make changes to your original data file. I chose to create a new file with just the items that are duplicates.
Many modern distros running sort will implement ignore case by default. If yours does not, adding the -f option will produce the expected results.
I hope this tutorial helped you get the basic usage of the sort command in Linux. Sort command is often used in conjugation with the uniq command in Linux for uniquely sorting text files. Please enter at least 3 characters 0 results found.
Christopher Murray. Sort command in Linux is used for sorting the contents of the text files. This tutorial shows you some basic examples of the sort command. Table of Contents. Sort command in Linux The sort command arranges text lines in useful ways. Example: Create a file mix. Using the -o option is functionally the same as redirecting the output to a file.
Note: Neither one has an advantage over the other. Example: The input file is the same as mentioned above. This option is used to sort the file with numeric data present inside. Example : Let us consider a file with numbers:. Example: The numeric file is the same as above. Use the -k option to sort on a certain column. This will write to standard output if there are lines that are out of order. The sort tool can be used to understand if this file is sorted and which lines are out of order.
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