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Old 05-19-2012, 11:55 PM   #1
spkemp
LQ Newbie
 
Registered: May 2012
Location: US 97103
Distribution: Ubuntu, for lack of any current knowledge of my choices.....
Posts: 4

Rep: Reputation: Disabled
cursor blinking - highly technical stupid question


DESCRIPTION OF THE BEHAVIOR:
1) The bash script beeping, does a beep, waits 10 seconds, and loops until interrupted.

2) All that is visible is the cursor, as expected. In the first iteration, after the beep 'alarm' sounds, the cursor is blinking. In the second iteration, it is not blinking. This alternating blinking/not-blinking continues until the ctl-C stops execution of beeping.

EXECUTION-TIME EXAMPLE:

Quote:
me@kengfu:~$ cat bin/beep
echo $'\a'
me@kengfu:~$
me@kengfu:~$ cat bin/beeping
while true
do

bin/beep
sleep 10

done
me@kengfu:~$ bin/beeping




^Cme@kengfu:~$
THE STUPID QUESTIONS:
1. Does this occur for you?
2. Can anyone explain why does the cursor stop blinking? I can't.


COMMENTS:
There are no tricks, or subterfuge.
P.S.
To be completely rigorous, in actuality the code is tab-indented and appears like this:

while true
do
bin/beep
sleep 10
done


but the 'code' formatting used in this post mungs the indentation, sorry...

OPERATING SYSTEM & HARDWARE SPECIFICS:
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Last edited by spkemp; 05-20-2012 at 03:28 PM.
 
Old 05-20-2012, 02:37 PM   #2
qweeak
LQ Newbie
 
Registered: Jan 2012
Posts: 24

Rep: Reputation: 2
Strange.. i tried the script and my cursor blinks all the time.
 
1 members found this post helpful.
Old 05-20-2012, 04:03 PM   #3
David the H.
Bash Guru
 
Registered: Jun 2004
Location: Osaka, Japan
Distribution: Debian sid + kde 3.5 & 4.4
Posts: 6,823

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Use [code][/code] tags around your code and data, to preserve formatting and to improve readability. Please do not use quote tags, colors, or other fancy formatting.

And I'm not seeing this behavior either. Of course I set my console not to do that annoying blinking by default anyway, but I temporarily reset it just to test this.
 
1 members found this post helpful.
Old 05-23-2012, 08:37 PM   #4
spkemp
LQ Newbie
 
Registered: May 2012
Location: US 97103
Distribution: Ubuntu, for lack of any current knowledge of my choices.....
Posts: 4

Original Poster
Rep: Reputation: Disabled
follow-up: can no longer reproduce this error

I goofed -- I am still seeing this behavior, I do not have enough knowledge of termcap/terminfo to fix it by invetigating the tput setting...

So consider the issue still open...

Last edited by spkemp; 05-25-2012 at 05:38 AM. Reason: coeerction of the prior post
 
Old 05-23-2012, 08:43 PM   #5
uhelp
Member
 
Registered: Nov 2011
Location: Germany, Bavaria, Nueremberg area
Distribution: openSUSE, Debian, LFS
Posts: 205

Rep: Reputation: 43
If that happen again use
termcap, terminfo with "tput"

I think, that the given defaults led to this behaviour.
(And of course, it is a very strange setting...
 
  


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