An rxvt-unicode Perl extension script for monitoring terminal activity, opening buffers in Vim and changing font size on the fly. The rxvt-unicode terminal emulator is a good, very configurable alternative to xterm or the GNOME Terminal, available in all systems.
mon
Lets you monitor a terminal, such that it rings the bell every time something changes in it. This is particularly useful if you've configured rxvt-unicode to set the urgency hint upon bell and e.g. make your window glow red.
vim
Opens the entire terminal buffer into Vim, so you can comfortably page it, search it, reorganise and extract the data in it.
smallerfont, largerfont and resetfont
Respectively decreases, increases and resets the font size in the terminal.
Drop the reactivity file into ~/.urxvt/ext/. Before running xrdb ~/.Xresources, you'll need to add the following lines to ~/.Xresources:
URxvt.perl-ext: reactivity
URxvt.keysym.M-m: perl:reactivity:mon
URxvt.keysym.M-v: perl:reactivity:vim
URxvt.keysym.M-0: perl:reactivity:resetfont
URxvt.keysym.M-0x002d: perl:reactivity:smallerfont
URxvt.keysym.M-0x003d: perl:reactivity:largerfont
Writing Perl extensions for rxvt-unicode is a great way to tailor it to suit your needs.