Question

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Bash - if press from "read" command, instantly stop and do other job

rated 0 times [ 0] [ 0] / answers: 1 / hits: 562 / 2 Years ago, wed, november 16, 2022, 10:50:45

How can i get this feature to work?

Pressing Esc while taking inputs from the user will exit the script

read -r -p "Enter the filenames: " -a arr



if press Esc; then

     read $round

     mkdir $round

fi



for filenames in "${arr[@]}"; do

   if [[ -e "${filenames} ]]; then

        echo "${filenames} file exists (no override)"

   else

        cp -n ~/Documents/library/normal.cpp "${filenames}"

   fi

done

How can i detect Esc key in this script?

PS: Saw many resources

https://www.linuxquestions.org/questions/linux-newbie-8/bash-esc-key-in-a-case-statement-759927/

they use another variable like $key or read -n1 $key just one character input

but here what will i do if I've a string or an array?

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dileble

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answered 1 Year ago ainlyyor · Accepted Answer

This should work in bash:

#!/bin/bash





# Bind the Escape key to run "escape_function" when pressed.

bind_escape () { bind -x '"e": escape_function' 2> /dev/null; }



# Unbind the Escape key.

unbind_escape () { bind -r "e" 2> /dev/null; }



escape_function () {



unbind_escape

echo "escape key pressed"

# command/s to be executed when the Escape key is pressed

exit



}



bind_escape



# Use read -e for this to work.

read -e -r -p "Enter the filenames: " -a arr



unbind_escape



# Commands to be executed when Enter is pressed.

for filename in "${arr[@]}"; do



        echo "$filename"



done