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33 lines
903 B
33 lines
903 B
#!/usr/bin/env bash
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if ! command -v bc > /dev/null 2>&1; then
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printf "%s\n" "You must have the 'bc' package installed to run this program"
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fi
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snowflakes=(❄ ❅ ❆)
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width=$(tput cols)
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platform=$(uname -s)
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if [ $platform = 'Linux' ]; then
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cpu_count=$(grep -ic ^processor /proc/cpuinfo);
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elif [ $platform = 'Darwin' ]; then
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cpu_count=$(sysctl -n hw.ncpu)
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fi
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while true; do
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if [ $platform = 'Linux' ]; then
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load=$(cut -d ' ' -f 1 /proc/loadavg)
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elif [ $platform = 'Darwin' ]; then
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load=$(sysctl -n vm.loadavg | cut -d ' ' -f 2)
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fi
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heaviness=$(echo "scale=10;$load/$cpu_count" | bc)
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rand_col=$(( (RANDOM % width) + 1 ))
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printf "%${rand_col}s\n" "${snowflakes[$(( (RANDOM % ${#snowflakes[*]}) ))]}"
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if [ "$(echo "$heaviness > 1" | bc -l)" -eq 1 ]; then
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sleep "$(echo "scale=10;1/$heaviness" | bc)"
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else
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sleep .75
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fi
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done
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