urxvt:tldr:b5565

The command urxvt is used to launch the URxvt (abbreviation for "unlimited terminal emulator") terminal emulator. It is known for its lightweight and highly customizable nature.

Let's break down the given command: urxvt -e ${sh} -c ${command}

1. urxvt: This is the command to launch the URxvt terminal emulator.

2. -e: This option tells URxvt to execute a specific command after startup.

3. ${sh}: This is a placeholder variable that should be replaced with the desired shell to use. The shell can be any installed shell on your system like /bin/bash, /bin/zsh, /bin/csh, etc. It specifies which shell the -c command should be executed with.

4. -c: This option is used to pass a command to the shell for execution.

5. ${command}: This is another placeholder variable that should be replaced with the command you want to execute within the specified shell.

To use this command effectively, replace ${sh} with the desired shell (e.g., /bin/bash) and ${command} with the specific command you want to run within that shell (e.g., ls -l). The final command will launch URxvt, open a new terminal window, execute the specified command within the chosen shell, and display the output in the URxvt terminal.