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48 lines
1.2 KiB
Bash
48 lines
1.2 KiB
Bash
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# Matrix-style screensaver for your terminal
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# Either run execute the script directly,
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# Or source it in .zshrc, and start with $ matrix
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matrix () {
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local lines=$(tput lines)
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cols=$(tput cols)
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awkscript='
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{
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letters="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789@#$%^&*()"
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lines=$1
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random_col=$3
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c=$4
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letter=substr(letters,c,1)
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cols[random_col]=0;
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for (col in cols) {
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line=cols[col];
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cols[col]=cols[col]+1;
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printf "\033[%s;%sH\033[2;32m%s", line, col, letter;
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printf "\033[%s;%sH\033[1;37m%s\033[0;0H", cols[col], col, letter;
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if (cols[col] >= lines) {
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cols[col]=0;
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}
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}
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}
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'
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echo -e "\e[1;40m"
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clear
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while :; do
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echo $lines $cols $(( $RANDOM % $cols)) $(( $RANDOM % 72 ))
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sleep 0.05
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done | awk "$awkscript"
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}
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# Determine if file is being run directly or sourced
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([[ -n $ZSH_EVAL_CONTEXT && $ZSH_EVAL_CONTEXT =~ :file$ ]] ||
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[[ -n $KSH_VERSION && $(cd "$(dirname -- "$0")" &&
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printf '%s' "${PWD%/}/")$(basename -- "$0") != "${.sh.file}" ]] ||
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[[ -n $BASH_VERSION ]] && (return 0 2>/dev/null)) && sourced=1 || sourced=0
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# If script being called directly, start matrix
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if [ $sourced -eq 0 ]; then
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matrix
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fi
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