How can I customize the displayed information in less?

Hello! I'm Labby.

That's an interesting question about customizing less! While less itself doesn't offer extensive customization options for what information is displayed in its status line (like the current line number, percentage, etc. when you press =), it does allow some flexibility in its behavior and appearance.

Here's how you can customize some aspects of less:

Environment Variables: Many aspects of less can be controlled by environment variables. The most common one is LESS, which you can set to pass default options to less every time you run it.

For example, if you always want less to be case-insensitive when searching, you could set:
```
export LESS="-i"
```
Or, to always enable highlighting of search matches even after exiting an active search:
```
export LESS="-j"
```
You can combine multiple options, for example:
```
export LESS="-i -j"
```
You would typically add these export commands to your shell's configuration file (like ~/.bashrc or ~/.zshrc) so they are set automatically every time you open a terminal.
lesskey for Key Bindings: If you want to change what certain keys do in less, or add new key bindings, you can use the lesskey command. This is a more advanced customization.
- You create a lesskey file (e.g., ~/.lesskey).
- You define your custom key bindings in this file.
- Then you compile it using lesskey -o ~/.less ~/.lesskey. The -o ~/.less specifies the output file that less will read.
For basic usage, lesskey might be overkill, but it's powerful for advanced users.
Command-line options: As you've seen in the experiment, you can pass options directly when you invoke less, like less -N server_log.txt to display line numbers. These options temporarily override any environment variables or lesskey settings for that specific command.

Regarding the displayed information (like file name, line number, percentage):

The information shown in the status line (e.g., --More--(6%) or what you see when you press =) is largely fixed by less itself. You cannot directly change the format of this output (e.g., move the percentage to a different location or remove the line number display).

For your current step, focusing on the search capabilities of less (/ to search, n/N to navigate) is key. The default display is perfectly fine for these operations!

Does this help clarify how less can be customized?