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Shell Programming and Scripting
Alternative to Sleep?
Post 302892376 by LinQ on Wednesday 12th of March 2014 01:12:01 PM
03-12-2014
Alternative to Sleep?
Greetings.
I've been wondering about this one for some time: Is there an alternative to sleep in bash?
The reason: I'd like to simply limit the amount of processor usage in continuous while : script scenarios without spawning endless sleep processes as well. After beating the manpages, I still haven't a clue as to how one might do something like this...
Any ideas? Is it even possible???
Running 'Buntu 12.04, BTW
Thanks!
I've been wondering about this one for some time: Is there an alternative to sleep in bash?
The reason: I'd like to simply limit the amount of processor usage in continuous while : script scenarios without spawning endless sleep processes as well. After beating the manpages, I still haven't a clue as to how one might do something like this...
Any ideas? Is it even possible???
Running 'Buntu 12.04, BTW
Thanks!
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LEARN ABOUT SUNOS
sleep
sleep(1) User Commands sleep(1) NAME
sleep - suspend execution for an interval SYNOPSIS
sleep time DESCRIPTION
The sleep utility will suspend execution for at least the integral number of seconds specified by the time operand. OPERANDS
The following operands are supported: time A non-negative decimal integer specifying the number of seconds for which to suspend execution. EXAMPLES
Example 1: Suspending command execution for a time To execute a command after a certain amount of time: example% (sleep 105; command)& Example 2: Executing a command every so often example% while true do command sleep 37 done ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of sleep: LANG, LC_ALL, LC_CTYPE, LC_MES- SAGES, and NLSPATH. EXIT STATUS
The following exit values are returned: 0 The execution was successfully suspended for at least time seconds, or a SIGALRM signal was received (see NOTES). >0 An error has occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
wait(1), alarm(2), sleep(3C), wait(3UCB), attributes(5), environ(5), standards(5) NOTES
If the sleep utility receives a SIGALRM signal, one of the following actions will be taken: o Terminate normally with a zero exit status. o Effectively ignore the signal. The sleep utility will take the standard action for all other signals. SunOS 5.10 1 Feb 1995 sleep(1)