I've written a bash script which captures video with DVgrab. Because of the nature of the tapes that I am digitizing, sometimes I want to quit capturing before the time that I set for DVgrab. When this is the case I press Ctrl-c and DVgrab exits cleanly, my problem is that there is additional information that the script prints in the terminal with 'echo' when the script runs till it's set time. When I Ctrl-c none of this information prints...
Is there a way to intercept the SIGINT ( I think this is what I want, but I could be wrong) and have it operate exactly as it does by default, but additionally echo a few varibles in the terminal?
Preferably I would like to do this just in my script... and not effect the way Ctrl-c functions system wide.
Not sure if it matters, but based on my reading prior to this post I wasn't sure, but I run this script in a virtual terminal in gnome on an Ubuntu (8.10) Linux machine
The bit that I wanted to add when Ctrl-c is pressed looks like this:
Yes, I see that.... I just finished a 2 hr tape and my warning poped up after it ran for the full allotted time and exited normally...
I changed the -2- to -0- just guessing and i thought it was working.... ( I can't for the life of me find a listing of 'trap options' explaining what each number here would do?) I switched it because the -2- option isn't ending the script? It prints my inserted code, but doesn't bring back the prompt, it just continues the script?
---------- Post updated at 04:50 PM ---------- Previous update was at 04:27 PM ----------
Ok, I spoke too soon. the -2- option does stop DVgrab (it doesn't exit the script when i press Ctrl-c before the point in the script when DVgrab starts.... Which is fine except, I also have a function that runs a countdown in my script, and this countdown continues after Ctrl-c... The countdown function looks like this:
Code:
function countdown
{
local OLD_IFS="${IFS}"
IFS=":"
local ARR=( $1 )
local SECONDS=$(( (ARR[0] * 60 * 60) + (ARR[1] * 60) + ARR[2] ))
local START=$(date +%s)
local END=$((START + SECONDS))
local CUR=$START
while [[ $CUR -lt $END ]]
do
CUR=$(date +%s)
LEFT=$((END-CUR))
printf "\r%02d:%02d:%02d" \
$((LEFT/3600)) $(( (LEFT/60)%60)) $((LEFT%60))
sleep 1
done
IFS="${OLD_IFS}"
echo " "
}
Is there something that I could include in my -trap- code that would kill this function and print my warning?
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Hello,
What I want to accomplish is this:
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hi,
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Hi all,
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