Yet another strong testament for separating logic from UI.
$ remind REMIND 03.01.05 (English version) Copyright 1992-1998 David F. Skoll Copyright 1999-2008 Roaring Penguin Software Inc. Usage: remind [options] filename [date] [time] [*rep] Options: -n Output next occurrence of reminders in simple format -r Disable RUN directives -c[a][n] Produce a calendar for n (default 1) months -c[a]+[n] Produce a calendar for n (default 1) weeks -w[n[,p[,s]]] Specify width, padding and spacing of calendar -s[a][+][n] Produce `simple calendar' for n (1) months (weeks) -p[a][n] Same as -s, but input compatible with rem2ps -l Prefix each simple calendar line with line number and filename comment -v Verbose mode -o Ignore ONCE directives -t[n] Trigger all future (or those within `n' days) -h `Hush' mode - be very quiet -a Don't trigger timed reminders immediately - just queue them -q Don't queue timed reminders -f Trigger timed reminders by staying in foreground -z[n] Enter daemon mode, waking every n (5) minutes. -d... Debug: e=echo x=expr-eval t=trig v=dumpvars l=showline f=tracefiles -e Divert messages normally sent to stderr to stdout -b[n] Time format for cal: 0=am/pm, 1=24hr, 2=none -x[n] Iteration limit for SATISFY clause (def=150) -kcmd Run `cmd' for MSG-type reminders -g[ddd] Sort reminders by date, time and priority before issuing -ivar=val Initialize var to val and preserve var -m Start calendar with Monday rather than Sunday -y Synthesize tags for tagless reminders