Часы в терминале

Скрипт, рисующий часы в терминале. Где взял - не помню, но выглядит прикольно :). Решил выложить, чтобы не потерялся у меня в хламе.

---

#!/bin/bash

#       Clock in terminal by olecom. Idea by pulsar.
#       Additional push from unDEFER.

## SYNOPSIS:
#          ./clock.sh [delay | [-h | --help]]
##                    in seconds, default delay is 1 second.
##
#
# WARNING ! Run in pure BaSH, then mc & others.
# FEATURES: In xterm mode after 'top' it needs to
#           be 'clear' or 'tput clear' manually.
#           May be some other programs need that.
#
# --
# You may feel free to e-m@il me:
# $(echo "_olecomXflowerYupolZcz~" | tr _XYZ~ "<\100..>")
##
# * started in october 2002
# * reduced in plugin Wed Nov 27 06:09:01 EET 2002
# * good changes      Wed Dec  1 11:30:22 CET 2004
#
## $Id: clock.sh,v 1.4 2005/03/14 21:35:12 olecom Exp $
#

# featured echo, handles tty's existence, else kill itself
Echo() {
    if [ -w $OUT_TTY ]
    then echo -en $@ >$OUT_TTY || kill $$
    else kill $$
    fi
}

# trap on many SIGnals, that may be send here to kill us ;-)
clock_deinit() {
    # we are need to reset origin tty
    stty --file $OUT_TTY rows $ROWS
    # finalize resetting tty, here's setting of scrolling
    # region and making cursor position depend on that
    Echo "\E[1;"$ROWS"r"
    Echo "\E[?6h"
#    tput clear >$OUT_TTY
    Echo "Clock was successfully killed."

    exit 0
}

clock_init() {
    # global
    OUT_TTY=$1
    ROWS=$3
    COLS=$(( $(($4))/2 - 15 ))

    # below may be fanything
    TOP[1]="******"
    TOP[2]="L*****"
    TOP[3]="*i****"
    TOP[4]="**n***"
    TOP[5]="***u**"
    TOP[6]="****x*"
    TOP[7]="Debian"
    TOP[8]="GNU + "
    TOP[9]="Linux!"
    STRNUM=$((9 + 1))
    i=1
}

# Arguments:
# $1 - tty; $2 - delay, for slow connections; $3 - rows; $4 - cols;
term_linux_clock_run() {
    # common init
    clock_init $@
    # msg
    Echo "\n
BaSH Clock is active. Linux text mode.\n
It automaticaly quits on _terminal_ exit.\n
Or use 'kill $$'\n
\n
"
    # inf loop
    while [ 1 ]
    do
	#current row: Echo "\E7\E[1;32;40m\E[0G[$(date +%X)]<${TOP[$i]}>\E8"
	#rows, cols-17, atomic execution
        Echo "\E7\E[1;32;40m\E[$3;$(($4 - 17))H[$(date +%X)]<${TOP[$i]}>\E8"
	i=$((++i))
	if [ $STRNUM -eq $i ]
	then
	    i=1
	fi

	sleep $2
    done
}

# Arguments:
# $1 - tty; $2 - delay, for slow connections; $3 - rows; $4 - cols;
term_xterm_clock_run() {
    # common init
    clock_init $@

    # handling of killing
    trap "clock_deinit" 1 2 3 9 15

    # msg
    Echo "\n
BaSH Clock is active. XTerm mode.\n
It automaticaly quits on _terminal_ exit.\n
Or use 'kill $$'\n
\n
"
    # inf loop
    while [ 1 ]
    do
	# handling of resizing of xterm
	SIZE=($(stty --file $OUT_TTY size))
	if [ $ROWS -ne $(( ${SIZE[0]} + 1)) ]
	then
	    ROWS=${SIZE[0]}
	    # set tty
	    stty --file $OUT_TTY rows $(( $ROWS - 1 ))
	    # finalize tty
	    Echo "\E[1;$(( $ROWS - 1 ))r"
	fi

	# atomic execution of output
	D=$(date +%X)
        Echo "\E7\E[1;32;40m\E[$ROWS;$(($COLS))H[$D]<${TOP[$i]}>[$D]\E8"
	i=$((++i))
	if [ $STRNUM -eq $i ]
	then
	    i=1
	fi

	sleep $2
    done
}

##** main() **##

## Help checking
if [ "$1" = -h -o "$1" = --help ]
then
    echo "##
#       Clock in terminal by olecom. Idea by pulsar.
#       Additional push from unDEFER.
## SYNOPSIS:
#          clock.sh [delay | [-h | --help]]
##                  in seconds, default delay is 1 second.
##
#
# WARNING ! Run in pure BaSH, then mc & others.
# FEATURES: In xterm mode after 'top' it needs to
#           be 'clear' or 'tput clear' manually.
#           May be some other programs need that.
#
# --
# You may feel free to e-m@il me:
# $(echo "_olecomXflowerYupolZcz~" | tr _XYZ~ "<\100..>")
##"
    exit 0
fi

## mc detection
# find parent of our bash
PPPID=($(ps -o pid,ppid,comm | grep bash))
# if it is mc, then exit 1
if [ "$(ps h -o comm ${PPPID[1]})" = "mc" ]
then
    echo -e "Do not run this under mc !\nRead --help."
    exit 1
fi


# if not forked
if [ -z $4 ]
then 
    # initial
    OUT_TTY=$(tty)
    SIZE=($(stty size))
    ROWS=${SIZE[0]}
    COLS=${SIZE[1]}

    # delay is a digit, integer or real
    if [ -z $1 ]
    then DELAY=1
    else
        if [ "$(echo $1 | sed s/\[\.0123456789\]//g)" ] 
        then
            DELAY=1
        else
            DELAY=$1
        fi
    fi

    if [ $TERM = linux ]
    then
	# fork
	$0 $OUT_TTY $DELAY $ROWS $COLS 2>&1 1>/dev/null &
    else
	# setting up tty with rows--
	stty rows $(( $ROWS - 1 ))
	# finalize setting up tty, here's setting scrolling region
	echo -en "\E[1;$(( $ROWS - 1 ))r"
	tput clear
	# fork
	$0 $OUT_TTY $DELAY $ROWS $COLS 2>&1 1>/dev/null &
#debug:	$0 $OUT_TTY $DELAY $ROWS $COLS
    fi
else 
#do the job
    if [ $TERM = linux ]
    then
	term_linux_clock_run $@
    else
	term_xterm_clock_run $@
    fi
fi

---

чтобы не запускать каждый раз, можно воспользоваться услугами .bashrc, к примеру:

echo "~/path/to/clock.sh" >> ~/.bashrc