Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Flock preventing function to work
Top Forums Shell Programming and Scripting Flock preventing function to work Post 302993831 by Chubler_XL on Tuesday 14th of March 2017 09:33:55 PM
Old 03-14-2017
What is happening? Are you getting an error something like DEBUG: command not found or are you just not seeing any output?

Perhaps fping is causing the issue - I don't have it installed here so I replaced the fping line with sleep 5 and it works fine:

Code:
$ cat batchenr
function DEBUG() {
echo "
==============================
$(date)
=============================="
echo  "RSULTE:  $RESULTS"
}

(
flock -x -w 3 200 || exit 1
sleep 5
RESULTS=Testing
DEBUG
) 200>/tmp/.myscript.exclusivelock

$ ./batchenr

==============================
Wed, Mar 15, 2017  1:30:50 AM
==============================
RSULTE:  Testing
$

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Will the continue function work ????

I have written a script which does a following functions:- 1) Check a area if it is mounted or not 2) If the area is not mounted it will prompt the user to mount the are. 3) Once the area is mounted and the option is given as Y or y the script continues... My question is will the below... (2 Replies)
Discussion started by: kamlesh_p
2 Replies

2. Web Development

work with date function

hi, how can i can pass the value of unixformat to date/time? and how can i retrieve the day/month/year from a date? thanks a lot for your help ps:i using php (1 Reply)
Discussion started by: jasonx22
1 Replies

3. Programming

why printf() function don't go work?

I use FreeBSD,and use signal,like follows: signal(SIGHUP,sig_hup); signal(SIGIO,sig_io); when I run call following code,it can run,but I find a puzzled question,it should print some information,such as printf("execute main()") will print execute main(),but in fact,printf fuction print... (2 Replies)
Discussion started by: konvalo
2 Replies

4. Shell Programming and Scripting

Cannot get grep to work within function.

Hello again, Am having an issue now with getting a simple grep command to work within a function.. The function is as below... function findRecord() { output=grep "001" recordDatabase echo $output } At the moment the "001"... (3 Replies)
Discussion started by: U_C_Dispatj
3 Replies

5. UNIX for Dummies Questions & Answers

copy *. does not work in function

Hi, I want to copy a file/directory ( recursively , if needed) and if destination directory does not exist create it ( with parent directory, if needed). funcopy () { if ; then echo "$2 exists , copying files" cp -r "$1" "$2" else echo "Directory does not exist;Create directory" mkdir... (1 Reply)
Discussion started by: greet_sed
1 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

Function doesn't work

Hello, and here's my problem: I can't get my function to do what I want. When I call my function get_from_A_to_F I give it an argument $remainder. I want my function to substitute a number higher than 9 to a specific letter. If the argument is equal to 10 than it should change it to "A".... (8 Replies)
Discussion started by: linas
8 Replies

8. UNIX for Advanced & Expert Users

Semaphore - lockfile/flock

Hi, I have a process which can run one instance at a time. Currently we have multiple scripts trying to kickoff this process. I wanted to implement the semaphore mechanism to achieve this. I was going through few examples. The below code seems to be reasonable solution. ... (5 Replies)
Discussion started by: tostay2003
5 Replies

9. UNIX for Beginners Questions & Answers

UNIX/Shell function does not work as wished

Hello everyone I really hope you can help me, I can't continue: Im on a project to work with my Server. I wanted to put on my server all data-systems and I did this: df -h The output is a string. How can I turn the string into a table? Dateisystem Größe Benutzt Verf. Verw% Eingehängt auf... (5 Replies)
Discussion started by: anonymuser
5 Replies

10. OS X (Apple)

'time' does NOT work on a function in 'dash'.

Hi guys and gals... I am writing a piece of code that is dash compliant and came across this error. I have put it in the OSX section as that is what I am using. I have no idea what the 'dash' version is but was installed about 6 months ago. MBP, OSX 10.12.6, default terminal running dash on... (4 Replies)
Discussion started by: wisecracker
4 Replies

LEARN ABOUT DEBIAN

testing.randomvalue

Testing.randomValue(3kaya)				       Kaya module reference					Testing.randomValue(3kaya)

NAME

       Testing::randomValue - Return a random value

SYNOPSIS

       Arbitrary randomValue( Int depth=10 )

ARGUMENTS

       depth This parameter gives the maximum depth of recursion to guarantee that the value has finite size. The default value is 10 and can usu-
       ally be omitted.

DESCRIPTION

       Return a random value of arbitrary type.

AUTHORS

       Kaya standard library by Edwin Brady, Chris Morris and others (kaya@kayalang.org). For further information see http://kayalang.org/

LICENSE

       The Kaya standard library is free software; you can redistribute it and/or modify it under the terms  of  the  GNU  Lesser  General  Public
       License (version 2.1 or any later version) as published by the Free Software Foundation.

RELATED

       Testing.randomArray(3kaya)
       Testing.randomChar(3kaya)
       Testing.randomFloat(3kaya)
       Testing.randomInt(3kaya)
       Testing.randomString(3kaya)

Kaya								   October 2012 					Testing.randomValue(3kaya)
All times are GMT -4. The time now is 11:14 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy