Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Wrapping 'sleep' with my 'resleep' function (Resettable sleep)
Top Forums Shell Programming and Scripting Wrapping 'sleep' with my 'resleep' function (Resettable sleep) Post 302356805 by cfajohnson on Sunday 27th of September 2009 07:50:58 PM
Old 09-27-2009
Quote:
Originally Posted by deckard
Code:
  dur=`cat /tmp/.dtime`


UUOC (there and in other places).

Code:
 read dur < /tmp/.dtime

Rather than repeating /tmp/.dtime every time you refer to the file, set a variable and use that when needed:

Code:
timefile=/tmp/.dtime     ## but see below
...
read dur < "$timefile"

What happens if you have two scripts running? One will mess up the file for the other.

You should create a unique filename for each instance, e.g.:

Code:
timefile=/tmp/.dtime$$

 

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

sleep

what is the purpose of the sleep command? (5 Replies)
Discussion started by: Anna
5 Replies

2. Shell Programming and Scripting

Sleep under one second

If I want a script to sleep for less than a second, would I use a decimal? In other words, if I wanted my script to sleep for 1/4 of a second, would I say, SLEEP .25 ?? (5 Replies)
Discussion started by: Scoogie
5 Replies

3. UNIX for Dummies Questions & Answers

Sleep less than 1 second

Does anyone know a way to sleep less than 1 second? Sometimes when I write scripts that iterates a loop many times it would be nice to slow things down, but sometimes 1 second is too much. (9 Replies)
Discussion started by: bjorno
9 Replies

4. Shell Programming and Scripting

Help with sleep function

Hey everyone, just entering the linux world, I need some help with a shell script i'm trying to write, the purpose is to check every 10 minutes what was the last time a certain file was modified, and if there is a connection to the server at this moment send an email with the date of the... (2 Replies)
Discussion started by: moshe88
2 Replies

5. Programming

C Sleep function hangs @ __kernel_vsyscall ()

This is the gdb backtrace. ^C Program received signal SIGINT, Interrupt. 0xffffe424 in __kernel_vsyscall () (gdb) bt #0 0xffffe424 in __kernel_vsyscall () #1 0xb7e56a70 in __nanosleep_nocancel () from /lib/libc.so.6 #2 0xb7e568bb in __sleep (seconds=0) at sleep.c:138 #3 0x080496d5 in... (6 Replies)
Discussion started by: dragonpoint
6 Replies

6. Shell Programming and Scripting

How the Sleep function will work?

Hi All, I am new to Unix , there i am facing one problem with sleep command. that is .. in while loop i have defined sleep function .. my condition is like this while #i knew this is infinite loop do sleep 200 echo "hello " done. this condition will never become .. true... (3 Replies)
Discussion started by: mandlysreedhar
3 Replies

7. Shell Programming and Scripting

Sleep while i > 0

Hi, I have a script that runs a process at the beginning and I want to sleep/wait until this process is finished and then continue with the rest of the script. I am trying with this, but it is not working: process=`ps -ef | grep "proc_p01 -c" | grep -v grep | wc -l` if ; do sleep 10 done... (7 Replies)
Discussion started by: apenkov
7 Replies

8. Programming

Sleep function not detected

Hello Im using geany to write my c codes. Below is my code to make the internal LED of beaglebone flashing. But i cant seem to use the sleep or delay to make the program wait for a couple of miliseconds. I've included all include files that i can find but none of it solve the problem. Any help is... (1 Reply)
Discussion started by: HellRyder
1 Replies

9. Programming

Doubt with signals and sleep function

Hi , I have a doubt with signals and sleep function. In a program i have this while(1) { //do some work sleep(1); }And in a thread i have something like this union sigval data; char message; char msg; data.sival_int=0; while(1) { ... (4 Replies)
Discussion started by: bacesado
4 Replies

LEARN ABOUT DEBIAN

i-ls

i-ls(1) 						      General Commands Manual							   i-ls(1)

NAME

       i-ls - display file stat and checksum information for files

SYNOPSIS

       i-ls [-s] filename

       i-ls [-s] dirname

       Specify a filename for i-ls to examine, or specify a directory with dirname to examine all the files in the directory.

       -s

	      Do not show/calculate checksums for all regular files.

DESCRIPTION

       The integrit system detects intrusion by detecting when trusted files have been altered.

       integrit records information about files in a database.	i-ls allows the user to see that information for live files.

       The output syntax is the same as that of integrit.

EXAMPLES

	    i-ls /tmp/foo.txt

       shows file stat attributes for the file, "/tmp/foo.txt".

	    i-ls /tmp

       shows file stat attributes for all files in the directory, "/tmp".

	    i-ls -s /tmp

       shows file stat attributes for all files in the directory, "/tmp", also including also checksums for all regular files.

AUTHOR

       Ed L Cashin <ecashin@users.sourceforge.net>

       See the integrit web site for up to date releases and information at

	   http://integrit.sourceforge.net/

SEE ALSO

       Integrit File Verification System Manual (info), lstat(2)

Version 4.1							   Jul 27, 2001 							   i-ls(1)
All times are GMT -4. The time now is 04:58 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy