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## spinner takes the pid of the process as the first argument and
# string to display as second argument (default provided) and spins
# until the process completes.
spinner() {
local PROC="$1"
#local str="${2:-'Copyright of KatworX© Tech. Developed by Arjun Singh Kathait and Debugged by the ☆Stack Overflow Community☆'}"
local delay="0.1"
tput civis # hide cursor
printf "${WHT}"
while [ -d /proc/$PROC ]; do
#-\|/
#⠁⠂⠄⡀⢀⠠⠐⠈
#▁▂▃▄▅▆▇█▇▆▅▄▃▂▁
#←↖↑↗→↘↓↙
#▖▘▝▗
#◢◣◤◥
#┤┘┴└├┌┬┐
#◰◳◲◱
#◴◷◶◵
#◐◓◑◒
#⣾⣽⣻⢿⡿⣟⣯⣷
printf '\033[s\033[u[ ▁ ] %s\033[u' "$str"; sleep "$delay"
printf '\033[s\033[u[ ▂ ] %s\033[u' "$str"; sleep "$delay"
printf '\033[s\033[u[ ▃ ] %s\033[u' "$str"; sleep "$delay"
printf '\033[s\033[u[ ▄ ] %s\033[u' "$str"; sleep "$delay"
printf '\033[s\033[u[ ▅ ] %s\033[u' "$str"; sleep "$delay"
printf '\033[s\033[u[ ▆ ] %s\033[u' "$str"; sleep "$delay"
printf '\033[s\033[u[ ▇ ] %s\033[u' "$str"; sleep "$delay"
printf '\033[s\033[u[ █ ] %s\033[u' "$str"; sleep "$delay"
printf '\033[s\033[u[ ▇ ] %s\033[u' "$str"; sleep "$delay"
printf '\033[s\033[u[ ▆ ] %s\033[u' "$str"; sleep "$delay"
printf '\033[s\033[u[ ▅ ] %s\033[u' "$str"; sleep "$delay"
printf '\033[s\033[u[ ▄ ] %s\033[u' "$str"; sleep "$delay"
printf '\033[s\033[u[ ▃ ] %s\033[u' "$str"; sleep "$delay"
printf '\033[s\033[u[ ▂ ] %s\033[u' "$str"; sleep "$delay"
printf '\033[s\033[u[ ▁ ] %s\033[u' "$str"; sleep "$delay"
done
wait ${PROC}
retval=$?
printf '\033[s\033[u%*s\033[u\033[0m' $((${#str}+6)) " " # return to normal
tput cnorm # restore cursor
return $retval
}
export -f spinner
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