To sort in reverse order pass the -r option to sort . This will sort in reverse order and write the result to standard output. Using the same list of metal bands from the previous example this file can be sorted in reverse order with the -r option.
How do I sort a Linux file in reverse order?
-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.
How do you sort a list in reverse order?
Collections. sort() method. This method requires two parameters i.e. the list to be sorted and the Collections. reverseOrder() that reverses the order of an element collection using a Comparator.
Which command is used to sort lines in a file in reverse order?
sort-r is the Command used to sort the line of data in a file in reverse order.
How do I sort lines in Linux?
Sort lines of a text file
- To sort the file in alphabetical order, we can use the sort command without any options:
- To sort in reverse, we can use the -r option:
- We can also sort on the column. For example, we will create a file with the following text:
- Blank space is the default field separator.
How do I sort files in Linux?
How to Sort Files in Linux using Sort Command
- Perform Numeric Sort using -n option. …
- Sort Human Readable Numbers using -h option. …
- Sort Months of an Year using -M option. …
- Check if Content is Already Sorted using -c option. …
- Reverse the Output and Check for Uniqueness using -r and -u options.
How do you sort an ArrayList in reverse order?
Approach: An ArrayList can be Sorted by using the sort() method of the Collections Class in Java. This sort() method takes the collection to be sorted and Collections. reverseOrder() as the parameter and returns a Collection sorted in the Descending Order. Collections.
How do you reverse an array list?
Let’s see a simple example to reverse ArrayList in Java:
- public class ReverseArrayList {
- public static void main(String[] args) {
- List<String> l = new ArrayList<String>();
- l. add(“Mango”);
- l. add(“Banana”);
- l. add(“Mango”);
- l. add(“Apple”);
- System. out. println(“Before Reversing”);
What does sort do in Linux?
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.
How do I sort files by name in Linux?
If you add the -X option, ls will sort files by name within each extension category. For example, it will list files without extensions first (in alphanumeric order) followed by files with extensions like . 1, . bz2, .
Which command will display a calendar?
The cal command is a command line utility for displaying a calendar in the terminal. It can be used to print a single month, many months or an entire year.
How do I sort a column in Linux?
Sorting by a Single Column
Sorting by single column requires the use of the -k option. You must also specify the start column and end column to sort by. When sorting by a single column, these numbers will be the same. Here is an example of sorting a CSV (comma delimited) file by the second column.
What is $? In Unix?
The $? variable represents the exit status of the previous command. Exit status is a numerical value returned by every command upon its completion. … For example, some commands differentiate between kinds of errors and will return various exit values depending on the specific type of failure.