* [gentoo-user] OT: bash scripting: implement uninterruptable sleep
@ 2006-03-28 8:13 Sascha Lucas
2006-03-28 21:41 ` Richard Fish
0 siblings, 1 reply; 3+ messages in thread
From: Sascha Lucas @ 2006-03-28 8:13 UTC (permalink / raw
To: gentoo-user
Hi List,
I have a shell script and want a uninterruptable sleep. /usr/bin/sleep
itself seems to have its own signal handlers. How is it possible to sleep
uninterruptable?
#!/bin/bash
trap "echo 'Ctrl+C should not work'" INT
for foo in 1 2 3; do
echo $foo
sleep 10
done
## end of script
TIA,
Sascha.
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* Re: [gentoo-user] OT: bash scripting: implement uninterruptable sleep
2006-03-28 8:13 [gentoo-user] OT: bash scripting: implement uninterruptable sleep Sascha Lucas
@ 2006-03-28 21:41 ` Richard Fish
2006-03-31 9:06 ` Sascha Lucas
0 siblings, 1 reply; 3+ messages in thread
From: Richard Fish @ 2006-03-28 21:41 UTC (permalink / raw
To: gentoo-user
On 3/28/06, Sascha Lucas <sascha.lucas@rus.uni-stuttgart.de> wrote:
> Hi List,
>
> I have a shell script and want a uninterruptable sleep. /usr/bin/sleep
> itself seems to have its own signal handlers. How is it possible to sleep
> uninterruptable?
trap "echo 'Ctrl+C should not work'" INT
now=`date +%s`
expires=$(( $now + 10 ))
while test $now -lt $expires; do
sleep $(( $expires - $now ))
now=`date +%s`
done
-Richard
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^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [gentoo-user] OT: bash scripting: implement uninterruptable sleep
2006-03-28 21:41 ` Richard Fish
@ 2006-03-31 9:06 ` Sascha Lucas
0 siblings, 0 replies; 3+ messages in thread
From: Sascha Lucas @ 2006-03-31 9:06 UTC (permalink / raw
To: gentoo-user
Hi,
On Tue, 28 Mar 2006, Richard Fish wrote:
> On 3/28/06, Sascha Lucas <sascha.lucas@rus.uni-stuttgart.de> wrote:
>> I have a shell script and want a uninterruptable sleep. /usr/bin/sleep
>> itself seems to have its own signal handlers. How is it possible to sleep
>> uninterruptable?
>
> trap "echo 'Ctrl+C should not work'" INT
> now=`date +%s`
> expires=$(( $now + 10 ))
> while test $now -lt $expires; do
> sleep $(( $expires - $now ))
> now=`date +%s`
> done
excellent! take system time and loop sleep until time is over.
Thanks,
Sascha.
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2006-03-28 8:13 [gentoo-user] OT: bash scripting: implement uninterruptable sleep Sascha Lucas
2006-03-28 21:41 ` Richard Fish
2006-03-31 9:06 ` Sascha Lucas
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