Changing the Default Terminal to Terminator on Ubuntu

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Terminator is a powerful tool for developers, allowing you to manage multiple terminal sessions in a single window. Features like splitting panes, tabs, and simultaneous input can significantly boost your productivity. Step 1: Install Terminator First, install Terminator using the apt package manager. sudo apt update sudo apt install terminator -y The -y option automatically answers 'yes' to any prompts during the installation process, streamlining the setup. Step 2: Set as the System Default Ubuntu uses a utility called update-alternatives to manage default applications. We'll use this tool to change the default terminal emulator ( x-terminal-emulator ) to Terminator. Run the Configuration Command Enter the following command in your terminal. A list of available terminals will appear. sudo update-alternatives --config x-terminal-emulator Select Terminator From the resulting list, enter the selection number corresponding to terminator and press Enter. ...
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Regular expression to change the first letter of each line to uppercase

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Regular Expression

When you execute this command, it will change the first letter of every line in the file to uppercase, leaving the rest of the line unchanged.

:%s/^\(.\)/\U\1/g

Break down and explain

This regular expression command breaks down as follows:

Regular expression

Description

:%s

Substitute command to find and replace text in the entire file.

^

Anchors the search to the beginning of each line.

\(.\)

Captures the first character of each line in a group (denoted by \(.\)).

\U\1

Replaces the captured first character with its uppercase version (\U) and the backreference to the captured group (\1).

g

This flag stands for “global”. When it appears at the end of the command, it means that all occurrences of the pattern in each line should be replaced.


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