Pracując na Unix’ach zobaczyłem fajną funkcję wyświetlania pewnych informacji za pomocą komendy banner. Pokazuje się większy napis co daje nam zwrócenie uwagi na coś. Szukałem tego w linux’ach w Debian bo taką dystrybucję używam na co dzień i nie znalazłem. Po chwili w sieci znalazłem prosty skrypt w bash:

#!/bin/bash

A=$((1<<0))
B=$((1<<1))
C=$((1<<2))
D=$((1<<3))
E=$((1<<4))
F=$((1<<5))
G=$((1<<6))
H=$((1<<7))

function outLine
{
typeset r=0 scan
for scan
do
typeset l=${#scan}
typeset line=0
for ((p=0; p<l; p++))
do
line="$((line+${scan:$p:1}))"
done
for ((column=0; column<8; column++))
do
[[ $((line & (1<<column))) == 0 ]] && n=" " || n="#"
raw[r]="${raw[r]}$n"
done
r=$((r+1))
done
}

function outChar
{
case "$1" in
(" ") outLine "" "" "" "" "" "" "" "" ;;
("0") outLine "BCDEF" "AFG" "AEG" "ADG" "ACG" "ABG" "BCDEF" "" ;;
("1") outLine "F" "EF" "F" "F" "F" "F" "F" "" ;;
("2") outLine "BCDEF" "AG" "G" "CDEF" "B" "A" "ABCDEFG" "" ;;
("3") outLine "BCDEF" "AG" "G" "CDEF" "G" "AG" "BCDEF" "" ;;
("4") outLine "AF" "AF" "AF" "BCDEFG" "F" "F" "F" "" ;;
("5") outLine "ABCDEFG" "A" "A" "ABCDEF" "G" "AG" "BCDEF" "" ;;
("6") outLine "BCDEF" "A" "A" "BCDEF" "AG" "AG" "BCDEF" "" ;;
("7") outLine "BCDEFG" "G" "F" "E" "D" "C" "B" "" ;;
("8") outLine "BCDEF" "AG" "AG" "BCDEF" "AG" "AG" "BCDEF" "" ;;
("9") outLine "BCDEF" "AG" "AG" "BCDEF" "G" "G" "BCDEF" "" ;;
("a") outLine "" "" "BCDE" "F" "BCDEF" "AF" "BCDEG" "" ;;
("b") outLine "B" "B" "BCDEF" "BG" "BG" "BG" "ACDEF" "" ;;
("c") outLine "" "" "CDE" "BF" "A" "BF" "CDE" "" ;;
("d") outLine "F" "F" "BCDEF" "AF" "AF" "AF" "BCDEG" "" ;;
("e") outLine "" "" "BCDE" "AF" "ABCDEF" "A" "BCDE" "" ;;
("f") outLine "CDE" "B" "B" "ABCD" "B" "B" "B" "" ;;
("g") outLine "" "" "BCDEG" "AF" "AF" "BCDE" "F" "BCDE" ;;
("h") outLine "B" "B" "BCDE" "BF" "BF" "BF" "ABF" "" ;;
("i") outLine "C" "" "BC" "C" "C" "C" "ABCDE" "" ;;
("j") outLine "D" "" "CD" "D" "D" "D" "AD" "BC" ;;
("k") outLine "B" "BE" "BD" "BC" "BD" "BE" "ABEF" "" ;;
("l") outLine "AB" "B" "B" "B" "B" "B" "ABC" "" ;;
("m") outLine "" "" "ACEF" "ABDG" "ADG" "ADG" "ADG" "" ;;
("n") outLine "" "" "BDE" "BCF" "BF" "BF" "BF" "" ;;
("o") outLine "" "" "BCDE" "AF" "AF" "AF" "BCDE" "" ;;
("p") outLine "" "" "ABCDE" "BF" "BF" "BCDE" "B" "AB" ;;
("q") outLine "" "" "BCDEG" "AF" "AF" "BCDE" "F" "FG" ;;
("r") outLine "" "" "ABDE" "BCF" "B" "B" "AB" "" ;;
("s") outLine "" "" "BCDE" "A" "BCDE" "F" "ABCDE" "" ;;
("t") outLine "C" "C" "ABCDE" "C" "C" "C" "DE" "" ;;
("u") outLine "" "" "AF" "AF" "AF" "AF" "BCDEG" "" ;;
("v") outLine "" "" "AG" "BF" "BF" "CE" "D" "" ;;
("w") outLine "" "" "AG" "AG" "ADG" "ADG" "BCEF" "" ;;
("x") outLine "" "" "AF" "BE" "CD" "BE" "AF" "" ;;
("y") outLine "" "" "BF" "BF" "BF" "CDE" "E" "BCD" ;;
("z") outLine "" "" "ABCDEF" "E" "D" "C" "BCDEFG" "" ;;
("A") outLine "D" "CE" "BF" "AG" "ABCDEFG" "AG" "AG" "" ;;
("B") outLine "ABCDE" "AF" "AF" "ABCDE" "AF" "AF" "ABCDE" "" ;;
("C") outLine "CDE" "BF" "A" "A" "A" "BF" "CDE" "" ;;
("D") outLine "ABCD" "AE" "AF" "AF" "AF" "AE" "ABCD" "" ;;
("E") outLine "ABCDEF" "A" "A" "ABCDE" "A" "A" "ABCDEF" "" ;;
("F") outLine "ABCDEF" "A" "A" "ABCDE" "A" "A" "A" "" ;;
("G") outLine "CDE" "BF" "A" "A" "AEFG" "BFG" "CDEG" "" ;;
("H") outLine "AG" "AG" "AG" "ABCDEFG" "AG" "AG" "AG" "" ;;
("I") outLine "ABCDE" "C" "C" "C" "C" "C" "ABCDE" "" ;;
("J") outLine "BCDEF" "D" "D" "D" "D" "BD" "C" "" ;;
("K") outLine "AF" "AE" "AD" "ABC" "AD" "AE" "AF" "" ;;
("L") outLine "A" "A" "A" "A" "A" "A" "ABCDEF" "" ;;
("M") outLine "ABFG" "ACEG" "ADG" "AG" "AG" "AG" "AG" "" ;;
("N") outLine "AG" "ABG" "ACG" "ADG" "AEG" "AFG" "AG" "" ;;
("O") outLine "CDE" "BF" "AG" "AG" "AG" "BF" "CDE" "" ;;
("P") outLine "ABCDE" "AF" "AF" "ABCDE" "A" "A" "A" "" ;;
("Q") outLine "CDE" "BF" "AG" "AG" "ACG" "BDF" "CDE" "FG" ;;
("R") outLine "ABCD" "AE" "AE" "ABCD" "AE" "AF" "AF" "" ;;
("S") outLine "CDE" "BF" "C" "D" "E" "BF" "CDE" "" ;;
("T") outLine "ABCDEFG" "D" "D" "D" "D" "D" "D" "" ;;
("U") outLine "AG" "AG" "AG" "AG" "AG" "BF" "CDE" "" ;;
("V") outLine "AG" "AG" "BF" "BF" "CE" "CE" "D" "" ;;
("W") outLine "AG" "AG" "AG" "AG" "ADG" "ACEG" "BF" "" ;;
("X") outLine "AG" "AG" "BF" "CDE" "BF" "AG" "AG" "" ;;
("Y") outLine "AG" "AG" "BF" "CE" "D" "D" "D" "" ;;
("Z") outLine "ABCDEFG" "F" "E" "D" "C" "B" "ABCDEFG" "" ;;
(".") outLine "" "" "" "" "" "" "D" "" ;;
(",") outLine "" "" "" "" "" "E" "E" "D" ;;
(":") outLine "" "" "" "" "D" "" "D" "" ;;
("!") outLine "D" "D" "D" "D" "D" "" "D" "" ;;
("/") outLine "G" "F" "E" "D" "C" "B" "A" "" ;;
("\\") outLine "A" "B" "C" "D" "E" "F" "G" "" ;;
("|") outLine "D" "D" "D" "D" "D" "D" "D" "D" ;;
("+") outLine "" "D" "D" "BCDEF" "D" "D" "" "" ;;
("-") outLine "" "" "" "BCDEF" "" "" "" "" ;;
("*") outLine "" "BDF" "CDE" "D" "CDE" "BDF" "" "" ;;
("=") outLine "" "" "BCDEF" "" "BCDEF" "" "" "" ;;
(*) outLine "ABCDEFGH" "AH" "AH" "AH" "AH" "AH" "AH" "ABCDEFGH" ;;
esac
}

function outArg
{
typeset l=${#1} c r
for ((c=0; c<l; c++))
do
outChar "${1:$c:1}"
done
echo
for ((r=0; r<8; r++))
do
printf "%-*.*s\n" "${COLUMNS:-80}" "${COLUMNS:-80}" "${raw[r]}"
raw[r]=""
done
}

for i
do
outArg "$i"
echo
done

Przykład działania: