# Sleep
Updated: 11/30/2021, 7:00:45 PM
Created: 11/30/2021, 7:00:45 PM
Last Updated By: Jake Tuttle
Read Time: 1 minute(s)
Tags: program profiling
# Description
Suspends execution for a specified number of seconds, or with the special ON or OFF operands can turn the execution of the SLEEP command on or off. Note that the -s option to jkeyauto can also be used to turn off execution of the SLEEP statement by default - in this case the SLEEP ON will subsequently over-ride this.
It's general use is as:
SLEEP {expression} | ON | OFF
- ON - When "SLEEP ON" is executed all SLEEP statements will be executed as normal.
- OFF- When "SLEEP OFF" is executed, all SLEEP statements will be ignored.
- expression The time to sleep expressed as a number of seconds. If the sleep time "expression" is not specified, it defaults to 1 second.
A non-integer value to sleep may be set for fractions of a second. The actual sleep time will depend upon the granularity of the system clock and the load on the system.
Typically, resolutions to the nearest 1/100th of a second are usually possible.
An example of use may be as:
value=0.6
time1=$UBOOT
sleep value*2
crt "Sleep: Request = ":value*2:" secs, actual = ":$UBOOT-time1
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