pwgen:tldr:b3c21

The command pwgen -y ${length} generates a random password using the pwgen utility, with the length specified by the variable ${length}.

Here's a breakdown of the command:

• pwgen is a command-line utility used for generating random passwords.
• The -y option stands for "include at least one of each of the characters from the set of characters that should be selected."
• ${length} is a variable that represents the desired length of the generated password. The value of this variable should be provided or set elsewhere in the script or command line.

When the command is executed with a valid value for ${length}, it will generate a random password with the specified length, making sure to include at least one character from each category (such as lowercase letters, uppercase letters, numbers, and special characters) in the password.