Sponsored Content
Full Discussion: Help with sleep function
Top Forums Shell Programming and Scripting Help with sleep function Post 302463243 by moshe88 on Saturday 16th of October 2010 03:15:12 PM
Old 10-16-2010
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 modification, if there is no connection, wait till there is - send the mail and wait another 10 minutes.

This is what I got:
Code:
Forever=1

while [ ${Forever} ] ; do
sleep 600
ping 192.168.1.254 -c 1
while [ $? -ne 0 ] ; do
    ping 192.168.1.254 -c 1
done
echo "Log Mail" | mail -s "file last modified on $(stat -c %x pf.cf)"
done

it seems that the mail is sent 10 minutes after the connection was established (which is not what im trying to achieve)
any help and suggestions would be much appreciated!

Last edited by Scott; 10-16-2010 at 05:18 PM.. Reason: Please use code tags
 

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

Wrapping 'sleep' with my 'resleep' function (Resettable sleep)

This is a very crude attempt in Bash at something that I needed but didn't seem to find in the 'sleep' command. However, I would like to be able to do it without the need for the temp file. Please go easy on me if this is already possible in some other way: How many times have you used the... (5 Replies)
Discussion started by: deckard
5 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
MAIL(1) 						      General Commands Manual							   MAIL(1)

NAME
mail - send and receive electronic mail SYNOPSIS
mail [-dpqrv] [-f file] [user] OPTIONS
-d Force use of the shell variable MAILER -f Use file instead of /usr/spool/mail/user as mailbox -p Print all mail and then exit -q Quit program if SIGINT received -r Reverse print order, i.e., print oldest first -v Verbose mode EXAMPLES
mail ast # Send a message to ast mail # Read your mail DESCRIPTION
Mail is an extremely simple electronic mail program. It can be used to send or receive email on a single MINIX system, in which case it functions as user agent and local delivery agent. If the flag MAILER is defined in mail.c, it can also call a transport agent to handle remote mail as well. No such agent is supplied with MINIX. When called by user with no arguments, it examines the mailbox /usr/spool/mail/user, prints one message (depending on the -r flag), and waits for one of the following commands: <newline> Go to the next message - Print the previous message !command Fork off a shell and execute command CTRL-D Update the mailbox and quit (same as q) d Delete the current message and go to the next one q Update the mailbox and quit (same as CTRL-D) p Print the current message again s [file] Save message in the named file x Exit without updating the mailbox To send mail, the program is called with the name of the recipient as an argument. The mail is sent, along with a postmark line containing the date. For local delivery, a file named after the recipient in the directory /usr/spool/mail must be writable. If the directory /usr/spool/mail does not exist then the mail is dumped on the console, so that system programs have a way to notify a user on a system that does not have a mail spool. MAIL(1)
All times are GMT -4. The time now is 05:39 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy