49 lines
705 B
Bash
Executable File
49 lines
705 B
Bash
Executable File
#!/bin/bash
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h=0
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m=0
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s=0
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direction=1
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function chrono() {
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while true; do
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echo -en "\r$h:$m:$s "
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sleep 1
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s=$(($s+$direction))
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if [ $s -ge 60 ]; then
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s=0
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m=$(($m+$direction))
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elif [ $s -lt 0 ]; then
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s=59
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m=$(($m+$direction))
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fi
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if [ $m -ge 60 ]; then
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m=0
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h=$(($h+$direction))
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elif [ $m -lt 0 ]; then
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m=59
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h=$(($h+$direction))
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fi
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if [ $s -eq 0 -a $m -eq 0 -a $h -eq 0 ]; then
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echo -e "\r$h:$m:$s "
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break
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fi
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done
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}
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if [ ! -z $1 ]; then
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h=$(echo $1 | cut -d ':' -f1)
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m=$(echo $1 | cut -d ':' -f2)
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s=$(echo $1 | cut -d ':' -f3)
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direction=-1
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chrono
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else
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chrono &
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read
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kill %1
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fi
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