user-input

I'm prompting questions in a bash script like this: optionsAudits=("Yep" "Nope") echo "Include audits?" select opt in "${optionsAudits[@]}"; do case $REPLY in 1) includeAudits=true; break ;; 2) includeAudits=false; break ;; "\n") echo "You pressed enter"; break ;; # <--- doesn't work *) echo "What's that?"; exit;; esac done How can I select a default option when enter is pressed? The "\n" case does not catch the enter key. mklement0 To complement Aserre's helpful answer , which explains the problem with your code and offers an effective workaround, with background information and a generic,

I want to add a feature to my website to let users search the texts with RegEx . But, is it safe to let the users do something like that ? preg_match('/' . $user_input_regex . '/', $subject); There is a possible attack on this code called a ReDoS attack (Regular expression Denial of Service). The Regular expression Denial of Service (ReDoS) is a Denial of Service attack, that exploits the fact that most Regular Expression implementations may reach extreme situations that cause them to work very slowly (exponentially related to input size). An attacker can then cause a program using a Regular

I'm trying to any read user input keys in verbatim from Bash script, and then dump it into hex. That is: read input printf "%b" "$input" | xxd -p If user press 2 keys a BACKSPACE , I would hope the output to be 617f , not empty. How can I achieve that? This should work #!/bin/bash while true;do stty_state=$(stty -g) #Save stty to reset to default stty raw isig -echo #Set to raw and isig so nothing is interpretted and turn echo off so nothing is printed to screen. keypress=$(dd count=1 2>/dev/null) #Capture one character at a time #Redirect "errors" (from dd) output to dump keycode=$(printf "%s

I wrote this very simple function for my current project called insidelabel() that let's me add a description (label) for an input field inside of the input. //Label inside of inputfields function insidelabel(selector, name) { $(selector).val(name); $(selector).css({'color':'#999'}); $(selector).focus(function () { //Input Value if ($(this).val() == name) { $(this).val(''); } $(this).css({'color':'#000'}) }); $(selector).blur(function () { if ($(this).val() == '') { $(this).val(name); } if ($(this).val() == name) { $(this).css({'color':'#999'}); } }); } insidelabel('.t', 'name'); insidelabel('

I'm working on getting a little better at Java, and a problem I've run into is taking user input, all in one line like this: System.out.println("Please input numbers that you would like to work with"); //Read in user input into ArrayList, taking into account that they may input Strings or anything else. Assuming the user inputs something like this 1, 2, 4, 257, dog, rabbit, 7, # or even 1 2 4 257 dog rabbit 7 # I've seen in several places how to read in one input at a time, but I wasn't sure of the best way to read in a dynamic ArrayList all at once. I'm not really concerned with the