Macos Bash Prompt For Input With Default

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Macos Bash Prompt For Input With Default Command
Macos Bash Prompt For Input With Default Browser

Question – How to add [Y/n] confirmation in our own shell scripts? How to take input from the user as Yes/No/Y/N in bash?

Before you continue, reset your BASH prompt to the default. If you used the export command, log out and log back in. If you edited your /.bashrc file, place a # sign before each edit you made and save the file. The BASH prompt contains four different values: PS1, PS2, PS3, and PS4.
Apple replaces bash with zsh as the default shell in macOS Catalina. As a developer I use zsh daily but I have seen lot's of developers that want to use the.
Uses: read command is used for getting user input in a Linux shell script.-p switch with read command is used for showing some helpful text on-screen. Create a shell script named input.sh and add following content.

Many times you have seen commands ask for confirmation [Y/n] or [Yes/No] input. This is a very useful part to know if a user wants to proceed with the remaining steps for not. You can also add the same function to your script. This article will help you with examples of (Bash Script – Prompt to Confirm (Y/N, YES/NO)) this type of inputs.

#1. Bash (Yes/No) Prompt

This example code will prompt for confirming once if you give wrong input, the program will exit with status 1. The below example code will accept only Y or n or yes or no (Not case-sensitive).

Macos bash prompt for input with default key

</div><img src='https://www.howtogeek.com/wp-content/uploads/2017/05/img_591b632d9bac1.png?height=200p&trim=2,2,2,2' alt='Script' title='Script' /><img src='https://flaviocopes.com/macos-terminal-setup/Screenshot 2019-01-30 at 07.46.31.png' alt='Bash' title='Bash' /><img src='https://www.redhat.com/sysadmin/sites/default/files/styles/embed_large/public/2020-02/CPFigure3.png?itok=25r98cRD' alt='Macos Bash Prompt For Input With Default' title='Macos Bash Prompt For Input With Default' /><table><tbody><tr><td><div><div>2</div><div>4</div><div>6</div><div>8</div><div>10</div><div>12</div><div>14</div><div>16</div></div></td><td><div><div><span>[</span><span>yY</span><span>]</span><span>[</span><span>eE</span><span>]</span><span>[</span><span>sS</span><span>]</span><span>|</span><span>[</span><span>yY</span><span>]</span><span>)</span></div><div><span>;</span><span>;</span></div><div><span>echo</span><span>'No'</span></div><div>*<span>)</span></div><div><span>exit</span><span>1</span></div><div><span>esac</span></div></div></td></tr></tbody></table><h2>#2 Prompt for Confirmation (in Loop)</h2><h2 id='macos-bash-prompt-for-input-with-default-command'>Macos Bash Prompt For Input With Default Command</h2><p>This is another example code will prompt for confirmation until you give proper input like (Y, N, YES or NO). If you give the wrong input, it will again prompt for correct input and repeat the same steps. This example will accept only Y or N or YES or NO (Not case-sensitive).</p><div><textarea wrap='soft' readonly='>#!/bin/bashwhile truedo read -r -p 'Are You Sure? [Y/n] ' input case $input in [yY][eE][sS]|[yY]) echo 'Yes' break ;; [nN][oO]|[nN]) echo 'No' break ;; *) echo 'Invalid input...' ;; esacdone

Macos Bash Prompt For Input With Default Browser

[yY][eE][sS]|[yY])

break

[nN][oO]|[nN])

break

;;

done