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Top Forums Shell Programming and Scripting accessing variable from while loop Post 302627127 by free2rhyme2k on Friday 20th of April 2012 08:12:22 AM
Old 04-20-2012
accessing variable from while loop

Hi all,

Here is an outline of the problem:



Code:
#variable declared at start of script
x=0;

#a function that increments x by 1 every 10 seconds
incrementX(){
increments x every 10 seconds;
}

#i want this to output the value of x every second. The problem is that x is always reported as 0. This is in spite of the fact that x actually is updated as is known from other functions in the script. 
globalTimer(){
while true; do
sleep 1
echo $x;
done
}

#run both functions
incrementX &
globalTimer

Moderator's Comments:
Mod Comment Welcome to the UNIX and Linux Forums. Please use code tags. Video tutorial on how to use them

Last edited by Scrutinizer; 04-20-2012 at 09:18 AM..
 

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SVNPATH(1)																SVNPATH(1)

NAME
svnpath - output svn url with support for tags and branches SYNOPSIS
svnpath svnpath tags svnpath branches svnpath trunk DESCRIPTION
svnpath is intended to be run in a Subversion working copy. In its simplest usage, svnpath with no parameters outputs the svn url for the repository associated with the working copy. If a parameter is given, svnpath attempts to instead output the url that would be used for the tags, branches, or trunk. This will only work if it's run in the top-level directory that is subject to tagging or branching. For example, if you want to tag what's checked into Subversion as version 1.0, you could use a command like this: svn cp $(svnpath) $(svnpath tags)/1.0 That's much easier than using svn info to look up the repository url and manually modifying it to derive the url to use for the tag, and typing in something like this: svn cp svn+ssh://my.server.example/svn/project/trunk svn+ssh://my.server.example/svn/project/tags/1.0 svnpath uses a simple heuristic to convert between the trunk, tags, and branches paths. It replaces the first occurrence of trunk, tags, or branches with the name of what you're looking for. This will work ok for most typical Subversion repository layouts. If you have an atypical layout and it does not work, you can add a ~/.svnpath file. This file is perl code, which can modify the path in $url. For example, the author uses this file: #!/usr/bin/perl # svnpath personal override file # For d-i I sometimes work from a full d-i tree branch. Remove that from # the path to get regular tags or branches directories. $url=~s!d-i/(rc|beta)[0-9]+/!!; $url=~s!d-i/sarge/!!; 1 LICENSE
GPL version 2 or later AUTHOR
Joey Hess <joey@kitenet.net> Debian Utilities 2013-12-23 SVNPATH(1)
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