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Top Forums Shell Programming and Scripting What's going on in my scripts? Post 302188341 by era on Wednesday 23rd of April 2008 07:52:21 AM
Old 04-23-2008
Does dbFindChannel eat your standard input so it's empty on the next iteration?

Try rearranging the file descriptors.

I'm taking the liberty to fix some fluff while editing this ...

Code:
#!/bin/ksh
#To retrieve the ID for lots of the channels
#The id is the _NEWESTEID
#Usage: RetrieveID.ksh <filein> <fileout>
set -x

tmpfile="/tmp/tmpfile"
tmpfile2="/tmp/tmpfile2"

if [ $# -ne 2 ]; then
    echo "Usage:"
    echo "$0  <filein> <fileout> "
    exit 1
fi

exec 3<"$1"
while read line <&3
do
    CHANNELNAME=`echo $line | awk -F: '{print $3}' `

    if dbFindChannel -n ${CHANNELNAME} >${tmpfile2}
    then
        NewID=`awk '/DBUS_CHANNEL_NEWESTEID/ {print $2}' ${tmpfile2}`
    else
        NewID="Failed"        #If dbFindChannel failed
    fi

    echo "$line" "\t" "$NewID" >>${tmpfile}
done  # no <$1
exec 3<&-

mv ${tmpfile} "$2"
rm -f ${tmpfile2}

exit 0

Note the addition of double quotes around variables, the "if" flow, and the lack of Useless Use of More (sic)

Last edited by era; 04-23-2008 at 08:53 AM.. Reason: Note minor changes
 

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TMPFILE(3)								 1								TMPFILE(3)

tmpfile - Creates a temporary file

SYNOPSIS
resource tmpfile (void ) DESCRIPTION
Creates a temporary file with a unique name in read-write (w+) mode and returns a file handle . The file is automatically removed when closed (for example, by calling fclose(3), or when there are no remaining references to the file handle returned by tmpfile(3)), or when the script ends. For details, consult your system documentation on the tmpfile(3) function, as well as the stdio.h header file. RETURN VALUES
Returns a file handle, similar to the one returned by fopen(3), for the new file or FALSE on failure. EXAMPLES
Example #1 tmpfile(3) example <?php $temp = tmpfile(); fwrite($temp, "writing to tempfile"); fseek($temp, 0); echo fread($temp, 1024); fclose($temp); // this removes the file ?> The above example will output: writing to tempfile SEE ALSO
tempnam(3), sys_get_temp_dir(3). PHP Documentation Group TMPFILE(3)
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