ormaaj

#!/usr/bin/env bash
shopt -s extglob

a='aaabbbbccccc'

# Could be half this length if string assignment in an arithmetic context worked, or if the "foo" in ${#foo} could be any expression rather than a parameter.
echo "${a:b=$(b=${a%${a##*(a)}}; echo ${#b}),b:$(c=${a%%*(c)}; echo ${#c})-b}"

# Equivalent to any of:
# tmp="${a##*(a)}"; echo "${tmp%%*(c)}"

ormaaj

[Background]
Bold=false
Color=0,0,0

[BackgroundIntense]
Bold=false
Color=104,104,104

[Color0]
Bold=false

ormaaj

a: 1 2 1 2 1 1 2 1 2 1 2 1 2 1 2 1 2 1 1 2 1 2 1 2 1 2 1 2 1 2 1=16 2=14
b: 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 2 1 2 1 2 1 2 1 2 1 2 1 2 1=14 2=16
c: 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 1=15 2=15
d: 2 1 1 2 1 2 1 1 2 1 2 1 2 1 1 2 1 1 2 1 2 1 1 2 1 2 1 1 2 1 1=18 2=12
e: 3 2 3 2 3 2 3 2 3 2 3 2 3 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 3 2 2=14 3=16
f: 2 2 1 2 1 2 1 2 1 2 2 1 2 1 2 1 1 2 1 2 1 2 2 1 2 1 2 1 2 1 1=14 2=16

ormaaj

#!/usr/bin/env bash

set -x

f() {
    echo 'hi'
} >&${1}

{ f 3; cat; } <<<'' 3>/dev/stdin

ormaaj

reverse() {
    set -- "$@" "${2}[*]"
    local -a 'keys=("${!'"$1"'[@]}")'
    local -a "$2"=$'([${keys[n++]}]\'="${'"$1"$'[keys[\'{'$((${#keys[@]}-1))$'..0}\']]}"\')' # Generate elements
    local -a "$2"=$'(\''"${!3}"$'\')' #Concatenate elements
    local -a "$2"'=('"${!3}"')'       #Build array
    declare -p "$1" "$2";
}

fromArr=(4 [2]=3 5 6 [11]='9 10' 14 [15]=$'15[ -6');

ormaaj

#!/usr/bin/env bash

unset -v x y sh

while IFS= read -r s; do
    IFS= declare -a "shells=( $s )"
    IFS= read -r testCase
    printf '%s\n%6s%s\n' "$testCase" '' 'x y x y'
    for sh in "${shells[@]}"; do
        printf '%-4s: %s\n' "$sh" "$("$sh" -c "$testCase")"

ormaaj

#!/usr/bin/env ksh

# Charles Cooke's 16-color Mandelbrot
# http://earth.gkhs.net/ccooke/shell.html
# Combined Bash/ksh93 flavors by Dan Douglas (ormaaj)

function doBash {
	typeset P Q X Y a b c i v x y 
	for ((P=10**8,Q=P/100,X=320*Q/cols,Y=210*Q/lines,y=-105*Q,v=-220*Q,x=v;y<105*Q;x=v,y+=Y)); do
		for ((;x<P;a=b=i=c=0,x+=X)); do

ormaaj

#!/usr/bin/env bash

if [[ ${!KSH_VERSION} == .sh.version ]]; then
    if builtin getconf; builtin pids; then
        function BASHPID.get { .sh.value=$(pids -f '%(pid)d'); }
    elif [[ -r /proc/self/stat ]]; then
        function BASHPID.get { read -r .sh.value _ </proc/self/stat; }
    else
        function BASHPID.get { .sh.value=$(exec sh -c 'echo $PPID'); }
    fi 2>/dev/null

ormaaj

# Print or assign a random alphanumeric string of a given length.
# rndstr len [ var ]
function rndstr {
    if [[ $FUNCNAME == "${FUNCNAME[1]}" ]]; then
        unset -v a l
        printf "$@"
    elif [[ $1 != +([[:digit:]]) ]]; then
        return 1
    elif (( ! $1 )); then
        return

ormaaj

function mtimes {
    typeset x=
    typeset -i n=0
    for x; do
        n=0
        if [[ -d $x ]]; then
            mtimes "$x"/*
        else
            while [[ ${arr[n]+$x} -ot ${arr[n]} ]]; do
                ((n++))