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Full Discussion: Unable to set Global variable outside while loop
Top Forums Shell Programming and Scripting Unable to set Global variable outside while loop Post 302943506 by Don Cragun on Saturday 9th of May 2015 06:23:04 AM
Old 05-09-2015
The count=1 in your code is set in the while loop is in the last command in a pipeline. In the shell you're using the last command in a pipeline is run in a subshell. Variables set in a subshell are not available when you get back to the parent shell. So, everything in your script from where count is updated to where you use that updated value need to be in the same subshell. So...:
Code:
count=0
if 
...
...
else
...
find * -prune -type d | sort -r -n | ( while read d
    do
     count=1
     if [ "$count" == "1" ]; then
     echo "Count1:$count"
     ...
     ...
     break 2;
     fi
     ...
    done 
    ...
    fi
    echo "Count2:$count"
    if [ "$count" != "1" ]; then
    echo "Problem"
    fi
)

Note that break 2 breaks out of two enclosing loops and there is only one enclosing loop in this code. If you are trying to break out of a loop that contains the pipeline you've shown us, it won't work because you can't break out of a loop in a parent environment, only out of loops in the current (subshell) shell execution environment.
This User Gave Thanks to Don Cragun For This Post:
mohtashims
 

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LEARN ABOUT X11R4

zgrep

ZGREP(1)                                                      General Commands Manual                                                     ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep  options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

                                                                                                                                          ZGREP(1)
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