selector is a command line utility for dynamic string selection. It reads the content of the specified files, and as the user types a list of strings separated by ";" (or a regexp), the display is updated in real time to show only the lines containing all the said strings (or matching the regexp). This command was mainly designed as a way to search in the shell history, for which it is substantially more efficient than the standard readline ^R binding. With the -v option, it injects the selected line into the tty input buffer, hence allowing the user to edit the line and execute it as a standard command.
CCFE is a simple tool to quickly supply an interactive screen-oriented interface to command line scripts and commands. It prompts users for the information needed to run the commands, and can be programmed with your preferred shell to provide predefined selections and run-time defaults. It also provides a menu system to hierarchically organize them and a viewer to browse the standard output and standard error of invoked scripts or commands.