08-24-2011
How do I do a short delay (milliseconds) in a shell script?
I need to put a small delay into a shell script. I'm looking for something smaller than "sleep" - a second is way too long. I want to sleep something like 10 milliseconds. I've tried "usleep" and "nanosleep", but the script doesn't recognize them.
I'm using the bash shell but I'm willing to switch to a different shell if it helps to find a command that will do the delay.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi all,
i need help. I want to write a script and insert a delay time of 10 seconds. Which is the command for do this?
Thanks in advance (1 Reply)
Discussion started by: christian
1 Replies
2. Shell Programming and Scripting
how do i find out the date of the last time the system was last booted from? (8 Replies)
Discussion started by: jodders
8 Replies
3. Shell Programming and Scripting
Hi all,
i would like to know how to introduce a delay in the execution of a cmd?
am trying to copy a file which is about 650 mb and then perform some actions on it..
however since its huge i would like to introduce a delay in exection until the process is over
i dont want it to proceed to... (10 Replies)
Discussion started by: wrapster
10 Replies
4. Shell Programming and Scripting
Hi Expert,
I need to run some command 5 times with 5 mins interval whenever one of the application on server hang.
Can I use below scripts ?
Thanks!
-------------
#!/bin/sh
command1
sleep 300
command2
sleep 300
command3
sleep 300
command4
sleep 300
command5
sleep 300... (2 Replies)
Discussion started by: skully
2 Replies
5. UNIX Desktop Questions & Answers
Can anyone point me to the right direction on how to write a simple script that will display a message on any terminal when implemented?
Basically I need it so the script runs at a certain time, say April 30, 2010 and that the message will be displayed to me no matter which terminal I am logged... (2 Replies)
Discussion started by: jmack123
2 Replies
6. Shell Programming and Scripting
Hello,
My goal is to run the same Shell script in a parallel mode. This script will get triggered from different machines and different application teams by some job scheduling tool.
They may trigger the process at the same time. so I want to have them in QUEUE ..and release them for execution on... (3 Replies)
Discussion started by: chetan_sonar
3 Replies
7. Shell Programming and Scripting
Hi All,
How to introduce delay in the Bash/Shell Script till key stroke.
Below is the requirement..
1.Execute set of commands.
2.Display the message echo "press any key to continue"
Introduce a delay till key stroke.
3.Execute next set of commands.
Thanks in Advance
Sunil.K (5 Replies)
Discussion started by: sunilrk07
5 Replies
8. OS X (Apple)
I have installed my flash application using shell script. I have created short cut to desktop. Now i want to change the default short cut Icon. Please tell me script to change the short cut icon.
---------- Post updated at 12:54 AM ---------- Previous update was at 12:33 AM ----------
Working... (0 Replies)
Discussion started by: rohaneee
0 Replies
9. Shell Programming and Scripting
I am facing an issue where sometimes crontab is running script with some delay.
Below is the stmt in script and it is the only stmt in script.
echo "running at `date` " >> CRONCHECK.log
Below is the cron entry.
0 11 * * * CRONCHECK.sh
Below is the time of run each day.
running at Fri... (8 Replies)
Discussion started by: Nishant Singh
8 Replies
10. Shell Programming and Scripting
Please help me understand how sort -k3,3 -k 4,4 short* works , is it sorting 3 and 4 th field ? what is the use of specifying 3,3 and 4,4 in sort and what is actually does and i see sort -k3 short* and sort -k3,3 -k 4,4 short* giving the same output.
Sort output attached
Please help (2 Replies)
Discussion started by: Antony Ankrose
2 Replies
LEARN ABOUT PHP
time_sleep_until
TIME_SLEEP_UNTIL(3) 1 TIME_SLEEP_UNTIL(3)
time_sleep_until - Make the script sleep until the specified time
SYNOPSIS
bool time_sleep_until (float $timestamp)
DESCRIPTION
Makes the script sleep until the specified $timestamp.
PARAMETERS
o $timestamp
- The timestamp when the script should wake.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.3.0 | |
| | |
| | This function is now available on Windows plat- |
| | forms. |
| | |
+--------+---------------------------------------------------+
ERRORS
/EXCEPTIONS
If the specified $timestamp is in the past, this function will generate a E_WARNING.
EXAMPLES
Example #1
A time_sleep_until(3) example
<?php
//returns false and generates a warning
var_dump(time_sleep_until(time()-1));
// may only work on faster computers, will sleep up to 0.2 seconds
var_dump(time_sleep_until(microtime(true)+0.2));
?>
NOTES
Note
All signals will be delivered after the script wakes up.
SEE ALSO
sleep(3), usleep(3), time_nanosleep(3), set_time_limit(3).
PHP Documentation Group TIME_SLEEP_UNTIL(3)