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1.µãºÅ½ø¶ÈÏÔʾcode 1
#!/bin/sh
#Êä³ö"."½ø¶ÈÌõº¯Êý£¬¼æÈÝbsh¡¢ksh¡¢bash
#Ê×ÏÈtrap 1 2 3 15Ðźţ¬ÖØÒª
trap 'kill $BG_PID;echo;exit' 1 2 3 15
function dots
{
stty -echo >/dev/null 2>&1
while true
do
echo -e ".\c"
sleep 1
done
stty echo
echo
}
#---------------------------------------------
# Ö÷³ÌÐò¿ªÊ¼
#---------------------------------------------
#Ê×ÏÈʹdotsº¯Êýºǫ́ÔËÐÐ
dots &
BG_PID=$!
#¿ªÊ¼³ÌÐòÖ÷Ì壬±¾ÀýÖÐÖ´ÐÐÐÝÃß10Ãë
#×¢Òâ±ØÒªÊ±--8
2.¾®ºÅ½ø¶ÈÏÔʾcode 2
#!/bin/sh
abort() {
printf "\033[m\n"
exit
}
#donothing,justsimulatetimeconsume.
idle() {
i=1
sum=`date +%S`
sum=`expr $sum \* $sum | cut -b1`
sum=`expr $sum \* 10`
while [ $i -le $sum ]
do
i=`expr $i + 2`
trap abort 2
done
}
proc() {
begin=$1
end=$2
row=$3
pos1=`expr $begin + 1`
pos2=`expr $end - 1`
mid=`echo "($begin+$end)/2-2" |bc`
printf "\033[2J"
printf "\033[${row};${begin}H["
printf "\033[${row};${end}H]"
echo ##########################$pos1 -le $pos2
while [ $pos1 -le $p
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