Linux NL Command Detailed

NL Common Command Parameters

The NL command is used in a Linux system to calculate the line number of a file

-B: Specifies the way the line number is specified, mainly in two ways:

-B A: Indicates that the line number (similar to cat-n) is also listed, whether or not it is a blank line;

-B T: If there is a blank line, the empty line does not list the row number (default);

-N: List the method of line number representation, there are three main kinds:

-N LN: The line number is displayed at the left of the screen;

-N RN: The line number is displayed on the very right of its own field and does not add 0;

-N RZ: line number in its own field to the right of the display, and add 0;

Commonly used commands are shown:

Add line numbers regardless of the blank line no

[Email protected] omc]# Nl-b a last.txt  

Blank lines do not display line numbers

[Email protected] omc]# nl-b t Last.txt  

Line number in right

Line number in left

Linux NL Command Detailed