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I'm trying to convert this working bash script into an Ash script,

read -p "Username:" _username
if ! [[ "$_username" =~ [^a-zA-Z0-9] ]]; then
echo "Valid"
else
echo...

Thank you everyone who responded, I'm going through in no particular order.

I would be very interested to do this:

"It is quite possible to specify a shell script (or other application program)...

Hello,

I wrote a script and disabled Ctrl+C using

trap ' ' 2

For security, I cannot allow users to exit the script on their own for then they would have access to the command prompt. Are...

Thank you! It worked like a charm.

How do you make it so that, for the case statement, the user doesn't have to press 'enter'. I want it to be as soon as they press "1", for example, they're taken to that menu.

Tricky details..

Thank you Scott, your code worked without any modification. I'm still new to scripting.

Thanks in helping me out.

The do statement needs the following syntax:

while ...
do ...
done ...

I didn't have a "while" section to it when I was using Bash, and the command prompt just...

I wrote Bash script and now I want to convert it to Ash. One headache is this function:

do_adduser() {
setaddprompt
_arr_add=("Add manually" "Add via TXT" "return to main menu" "exit...