CODEWITHSUNDEEP
bashtimeoutpause
reddot
reddot

Reputation: 985

Press any key with timeout progress displayed in shell

I want to provide user with a prompt to press any key or wait for a timeout to continue using shell. Usually this case is solved with following idiom:

read -rs -t3 -n1 "Press any key or wait to continue ..."

However this prompt seems a little bit clumsy to me and I would like to left only "Press any key to continue ..." part of a message and indicate timeout with dots printed each second. So I write following script:

#!/bin/sh

echo -n "Press any key to continue";

for _ in `seq 3`; do
    if ! read -rs -n1 -t1 ; then echo -n "."; else break; fi
done

echo

It works just as I expect, but obviously there is too much code, so I have to put in separate file instead of using as sh -c "..." in script. Is there a way to implement it in more concise and compact way?

P.S. Returning non-zero error code on Ctrl-C pressed is a must.

Upvotes: 2

Views: 1395

Answers (1)

SLePort
SLePort

Reputation: 15461

A bit more concise :

echo -n "Press any key to continue";
for _ in {1..3}; do read -rs -n1 -t1 || printf ".";done;echo

Upvotes: 2

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