How do I sort a column in Linux?

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.

How do I sort by column?

Select a cell in the column you want to sort. On the Data tab, in the Sort & Filter group, click Sort. In the Sort dialog box, under Column, in the Sort by box, select the column that you want to sort. Under Sort On, select Cell Color, Font Color, or Cell Icon.

How do I sort a column by date in Unix?

The option -k 2,2n -k 3 sorts each column….

1. -n : sort numeric data.
2. -k 2.9 : Select 2nd filed and 9th character for sorting (i.e sort on last digit of year)
3. -k 2.5 : Select 2nd field and 5th character for sorting (i.e. sort on last digit of month)
4. -k 2 : Select 2nd field and sort it out.
5. data. file. txt : Input file.

How do I sort two columns in Unix?

Use the -k option to sort on a certain column. For example, use ” -k 2 ” to sort on the second column. In old versions of sort, the +1 option made the program sort on the second column of data ( +2 for the third, etc.).

How do I sort alphabetically in Unix?

Sort lines of a text file

1. To sort the file in alphabetical order, we can use the sort command without any options:
2. To sort in reverse, we can use the -r option:
3. We can also sort on the column.
4. Blank space is the default field separator.
5. In the picture above, we have sorted the file sort1.

What is sort k2?

sort -n -k2,3 file. sort -n -k2,3 file. sorts lines in file into increasing order evaluating the 2nd and 3rd fields as numeric values and if the numeric values of those two fields are the same when comparing two lines the entire line will be compared as a string of bytes to determine which line will come first.

How do we sort a table data?

Sort data in a table

1. Select a cell within the data.
2. Select Home > Sort & Filter. Or, select Data > Sort.
3. Select an option: Sort A to Z – sorts the selected column in an ascending order. Sort Z to A – sorts the selected column in a descending order.

How do I sort a table in Lua?

Lua tables are hashtables. Their entries have no specific order. You fake it by using consecutive numerical indices then iterating by incrementing a number (note: internally Lua actually will implement this as an array, but that’s an implementation detail; conceptually, table entries have no specific order).

How do I sort files by size in Unix?

The -S option is the key, telling the ls command to sort the file listing by size. The -h option tells ls to make the output human readable, and -r tells it to reverse the output, so in this case the largest files are shown at the end of the output.

What is cat command used for?

The cat (short for “concatenate“) command is one of the most frequently used commands in Linux/Unix-like operating systems. cat command allows us to create single or multiple files, view content of a file, concatenate files and redirect output in terminal or files.

What algorithm does Unix sort use?

The Algorithmic details of UNIX Sort command says Unix Sort uses an External R-Way merge sorting algorithm. The link goes into more details, but in essence it divides the input up into smaller portions (that fit into memory) and then merges each portion together at the end.

How do I sort in ascending order in Linux?

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.

How to sort a table by column number in Unix?

-k Option : Unix provides the feature of sorting a table on the basis of any column number by using -k option. Use the -k option to sort on a certain column. For example, use “-k 2” to sort on the second column.

How to sort tab delimited files in Unix?

Sorting a tab delimited file using the Unix sort command is easy once you know which parameters to use. An advanced file sort can get difficult to define if it has multiple columns, uses tab characters as column separators, uses reverse sort order on some columns, and where you want the columns sorted in non-sequential order.

How to sort multiple columns in a file?

If you want to sort column 1 and 2 together you’d use “-k 1,2”. To tell sort to sort multiple columns we have to define the key argument “-k” multiple times. The sort arguments required to sort our file in column order 1, 2, 4 and 3 will therefore look like this: We however want the 4th column sorted in reverse order.

What’s the best way to sort a file in Linux?

Use the -k option to sort on a certain column. For example, use “-k 2” to sort on the second column. -c option : This option is used to check if the file given is already sorted or not & checks if a file is already sorted pass the -c option to sort.