https://notes.freaks.dev/tags/script/Recent content in script onHugo -- gohugo.ioTue, 15 Nov 2022 00:00:00 +0000https://notes.freaks.dev/scripts/bash_spin/Tue, 15 Nov 2022 00:00:00 +0000https://notes.freaks.dev/scripts/bash_spin/Code spin() { local i=0 local sp="/-\|" local n=${#sp} printf " " sleep 0.2 while true; do printf "\b%s" "${sp:i++%n:1}" sleep 0.2 done } Usage #!/bin/bash spin() { . . . } printf "Hacking NASA " spin & spinpid=$! trap 'kill $spinpid' SIGTERM SIGKILL { # You can run all the command you want here. I will only run sleep command. sleep 5 } &>/dev/null kill $spinpid printf "\b \t[done]\n" printf "NASA has been successfully hacked!https://notes.freaks.dev/scripts/multi_select_option/Tue, 15 Nov 2022 00:00:00 +0000https://notes.freaks.dev/scripts/multi_select_option/Code multi_select_option() { # little helpers for terminal print control and key input ESC=$( printf "\033") cursor_blink_on() { printf "%s[?25h" "$ESC"; } cursor_blink_off() { printf "%s[?25l" "$ESC"; } cursor_to() { printf "%s[%s;%sH" "$ESC" "$1" "${2:-1}"; } print_inactive() { printf "%s %s " "$2" "$1"; } print_active() { printf "%s %s[7m %s %s[27m" "$2" "$ESC" "$1" "$ESC"; } get_cursor_row() { IFS=';' read -sdR -p $'\E[6n' ROW COL; echo "${ROW#*[}"; } get_cursor_col() { IFS=';' read -sdR -p $'\E[6n' ROW COL; echo "${COL#*[}"; } # local lines=$(tput lines) local cols=$(tput cols) local return_value=$1 local colmax=$2 local offset=$(( cols / colmax )) local -n options=$3 # local -n defaults=$4 local defaults=() local selected=() for ((i=0; i<${#options[@]}; i++)); do if [[ ${defaults[i]} = "true" ]]; then selected+=("true") else selected+=("false") fi printf "\n" done # determine current screen position for overwriting the options local lastrow=$(get_cursor_row) # local lastcol=$(get_cursor_col) local startrow=$(( lastrow - ${#options[@]} + 1 )) # local startcol=1 # ensure cursor and input echoing back on upon a ctrl+c during read -s trap "cursor_blink_on; stty echo; printf '\n'; exit" 2 cursor_blink_off key_input() { local key IFS= read -rsn1 key 2>/dev/null >&2 if [[ $key = "" ]]; then echo enter; fi; if [[ $key = $'\x20' ]]; then echo space; fi; if [[ $key = "k" ]]; then echo up; fi; if [[ $key = "j" ]]; then echo down; fi; if [[ $key = "h" ]]; then echo left; fi; if [[ $key = "l" ]]; then echo right; fi; if [[ $key = "a" ]]; then echo all; fi; if [[ $key = "n" ]]; then echo none; fi; if [[ $key = $'\x1b' ]]; then read -rsn2 key if [[ $key = [A || $key = k ]]; then echo up; fi; if [[ $key = [B || $key = j ]]; then echo down; fi; if [[ $key = [C || $key = l ]]; then echo right; fi; if [[ $key = [D || $key = h ]]; then echo left; fi; fi } toggle_option() { local option=$1 if [[ ${selected[option]} == true ]]; then selected[option]=false else selected[option]=true fi } toggle_option_multicol() { local option_row=$1 local option_col=$2 if [[ $option_row -eq -10 ]] && [[ $option_row -eq -10 ]]; then for ((option=0;option<${#selected[@]};option++)); do selected[option]=true done else if [[ $option_row -eq -100 ]] && [[ $option_row -eq -100 ]]; then for ((option=0;option<${#selected[@]};option++)); do selected[option]=false done else option=$(( option_col + option_row * colmax )) if [[ ${selected[option]} == true ]]; then selected[option]=false else selected[option]=true fi fi fi } print_options_multicol() { # print options by overwriting the last lines local curr_col=$1 local curr_row=$2 local curr_idx=0 local idx=0 local row=0 local col=0 curr_idx=$(( curr_col + curr_row * colmax )) for option in "${options[@]}"; do local prefix="[ ]" if [[ ${selected[idx]} == "true" ]]; then prefix="[✓]" fi row=$(( idx / colmax )) col=$(( idx - row * colmax )) cursor_to $(( startrow + row + 1)) $(( offset * col + 1)) if [ $idx -eq $curr_idx ]; then print_active "$option" "$prefix" else print_inactive "$option" "$prefix" fi ((idx++)) done } local active_row=0 local active_col=0 while true; do print_options_multicol $active_col $active_row # user key control case $(key_input) in space) toggle_option_multicol $active_row $active_col;; enter) print_options_multicol -1 -1; break;; up) (( active_row-- )); if [[ $active_row -lt 0 ]]; then active_row=0; fi;; down) (( active_row++ )); if [[ $(( ${#options[@]} % colmax )) -ne 0 ]]; then if [[ "$active_row" -ge $(( ${#options[@]} / colmax )) ]]; then active_row=$(( ${#options[@]} / colmax )); fi else if [[ "$active_row" -ge $(( ${#options[@]} / colmax -1 )) ]]; then active_row=$(( ${#options[@]} / colmax -1 )); fi fi;; left) (( active_col = active_col - 1 )); if [[ $active_col -lt 0 ]]; then active_col=0; fi;; right) (( active_col = active_col + 1 )); if [[ $active_col -ge $colmax ]]; then active_col=$(( colmax - 1 )) ; fi;; all) toggle_option_multicol -10 -10 ;; none) toggle_option_multicol -100 -100 ;; esac done # cursor position back to normal cursor_to $(( startrow + ( ${#options[@]} / colmax ) + 2 )) printf "\n" cursor_blink_on eval "$return_value"='("${selected[@]}")' } Usage #!https://notes.freaks.dev/scripts/posix_spin/Tue, 15 Nov 2022 00:00:00 +0000https://notes.freaks.dev/scripts/posix_spin/Code spin() { sp="/-\|" printf " " sleep 0.2 while true; do printf "\b%.1s" "$sp" sp=${sp#?}${sp%???} sleep 0.2 done } Usage #!/bin/sh spin() { . . . } printf "Hacking NASA " spin & spinpid=$! trap 'kill $spinpid' SIGTERM SIGKILL { # You can run all the command you want here. I will only run sleep command. sleep 5 } >/dev/null 2>&1 kill $spinpid printf "\b \t[done]\n" printf "NASA has been successfully hacked!https://notes.freaks.dev/scripts/run_step/Tue, 15 Nov 2022 00:00:00 +0000https://notes.freaks.dev/scripts/run_step/Code setup_log="$(mktemp -t setup_logXXX)" red="\033[1;31m" green="\033[1;32m" cyan="\033[0;36m" normal="\033[0m" spin() { local i=0 local sp="/-\|" local n=${#sp} printf " " sleep 0.2 while true; do printf "\b${cyan}%s${normal}" "${sp:i++%n:1}" sleep 0.2 done } log() { exec 3>&1 4>&2 trap 'exec 2>&4 1>&3' 0 1 2 3 exec 1>>"$setup_log" 2>&1 echo -e "\n${cyan}${1}${normal}\n" } run_step() { local msg="$1" local func="$2" local pos IFS='[;' read -p $'\e[6n' -d R -a pos -rs local current_row=${pos[1]} local current_col=${pos[2]} printf "${cyan}${msg}${normal}\033[${current_row};50H" spin & spinpid=$!https://notes.freaks.dev/scripts/select_option/Tue, 15 Nov 2022 00:00:00 +0000https://notes.freaks.dev/scripts/select_option/Code select_option() { # little helpers for terminal print control and key input ESC=$( printf "\033") cursor_blink_on() { printf "%s[?25h" "$ESC"; } cursor_blink_off() { printf "%s[?25l" "$ESC"; } cursor_to() { printf "%s[%s;%sH" "$ESC" "$1" "${2:-1}"; } print_option() { printf "%s %s " "$2" "$1"; } print_selected() { printf "%s %s[7m %s %s[27m" "$2" "$ESC" "$1" "$ESC"; } get_cursor_row() { IFS=';' read -sdR -p $'\E[6n' ROW COL; echo "${ROW#*[}"; } get_cursor_col() { IFS=';' read -sdR -p $'\E[6n' ROW COL; echo "${COL#*[}"; } key_input() { local key IFS= read -rsn1 key 2>/dev/null >&2 if [[ $key = "" ]]; then echo enter; fi if [[ $key = $'\x20' ]]; then echo space; fi if [[ $key = "k" ]]; then echo up; fi if [[ $key = "j" ]]; then echo down; fi if [[ $key = "h" ]]; then echo left; fi if [[ $key = "l" ]]; then echo right; fi if [[ $key = "a" ]]; then echo all; fi if [[ $key = "n" ]]; then echo none; fi if [[ $key = $'\x1b' ]]; then read -rsn2 key if [[ $key = [A || $key = k ]]; then echo up; fi if [[ $key = [B || $key = j ]]; then echo down; fi if [[ $key = [C || $key = l ]]; then echo right; fi if [[ $key = [D || $key = h ]]; then echo left; fi fi } print_options_multicol() { # print options by overwriting the last lines local curr_col=$1 local curr_row=$2 local curr_idx=0 local idx=0 local row=0 local col=0 curr_idx=$(( curr_col + curr_row * colmax )) for option in "${options[@]}"; do row=$(( idx / colmax )) col=$(( idx - row * colmax )) cursor_to $(( startrow + row + 1 )) $(( offset * col + 1 )) if [[ $idx -eq $curr_idx ]]; then print_selected "$option" else print_option "$option" fi ((idx++)) done } # initially print empty new lines (scroll down if at bottom of screen) for opt; do printf "\n"; done # determine current screen position for overwriting the options # local return_value=$1 local lastrow=$(get_cursor_row) # local lastcol=$(get_cursor_col) local startrow=$(( lastrow - $# )) # local startcol=1 # local lines=$( tput lines ) local cols=$(tput cols) local colmax=$2 local offset=$(( cols / colmax )) # local size=$4 shift 4 # ensure cursor and input echoing back on upon a ctrl+c during read -s trap "cursor_blink_on; stty echo; printf '\n'; exit" 2 cursor_blink_off local active_row=0 local active_col=0 while true; do print_options_multicol $active_col $active_row # user key control case $(key_input) in enter) break;; up) (( active_row-- )); if [[ "$active_row" -lt 0 ]]; then active_row=0; fi;; down) (( active_row++ )); if [[ $(( ${#options[@]} % colmax )) -ne 0 ]]; then if [[ "$active_row" -ge $(( ${#options[@]} / colmax )) ]]; then active_row=$(( ${#options[@]} / colmax )); fi else if [[ "$active_row" -ge $(( ${#options[@]} / colmax -1 )) ]]; then active_row=$(( ${#options[@]} / colmax -1 )); fi fi;; left) (( active_col = active_col - 1 )); if [[ "$active_col" -lt 0 ]]; then active_col=0; fi;; right) (( active_col = active_col + 1 )); if [[ "$active_col" -ge "$colmax" ]]; then active_col=$(( colmax - 1 )) ; fi;; esac done # cursor position back to normal cursor_to $(( lastrow - $# + ( $# / colmax ) - 1 )) printf "\n" cursor_blink_on return $(( active_col + active_row * colmax )) } Usage #!