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Top Forums Shell Programming and Scripting Parse a string in XML file using shell script Post 302148990 by matrixmadhan on Tuesday 4th of December 2007 01:50:05 PM
Old 12-04-2007
Sorry for not being correct the first time.

I have made the modifications

( Its not tested )

Hopefully, this should work now ! Smilie

Code:
#using a variable to keep track of the previously processed file
my $prev = "";

open(OUTPUT, ">>", "output.txt");

while (1) {

#Make it as ever running process

$file = `ls -lrt | awk '/SMSCDR/ { before = curr; curr = \$9 }END{ print before }'`; 

#select the file which is last but one
#include one more check, 

whether we are attempting to process an already processed file or not
next if ( $file =~ /tmp/ || $file eq $prev );

#if its the 'tmp' file dumper process is still active so don't process it else continue processing

open (FILE, "<", $file) or die  "Unable to open file $file <$!> \n";

#open the file and start processing

while(<FILE>) {
chomp;
my @arr = split(/></);
foreach (@arr) {
if( /xml version/ ) {
$c++;
print OUTPUT "\n";
}
if( />/ && /</ ) {
if( $c == 1 ) {
s/(.*)>(.*)<.*$/1|2/;
my($tmp1, $tmp2) = split(/|/);
$data .= (" " . $tmp2);
printf OUTPUT "%s ", $tmp1;
}
else {
s/(.*)>(.*)<.*$/2/;
printf OUTPUT "%s ", $_;
}
}
}
print OUTPUT "\n";
print OUTPUT "$data\n" if( /xml version/i );
}

close (FILE);

#Assign the current processed file to the prev variable, 
#so that previously processed file is stored in prev
$prev = $file;

#continue with while loop, by this time dumper process might have completed and next file ready for processing
}

close(OUTPUT);

exit 0;

 

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opensnoop(1m)							   USER COMMANDS						     opensnoop(1m)

NAME
opensnoop - snoop file opens as they occur. Uses DTrace. SYNOPSIS
opensnoop [-a|-A|-ceFghstvxZ] [-f pathname] [-n name] [-p PID] DESCRIPTION
opensnoop tracks file opens. As a process issues a file open, details such as UID, PID and pathname are printed out. The returned file descriptor is printed, a value of -1 indicates an error. This can be useful for troubleshooting to determine if applia- cions are attempting to open files that do not exist. Since this uses DTrace, only users with root privileges can run this command. OPTIONS
-a print all data -A dump all data, space delimited -c print current working directory of process -e print errno value -F print the flags passed to open -g print full command arguments -s print start time, us -t print user stack trace -v print start time, string -x only print failed opens -Z print zonename -f pathname file pathname to snoop -n name process name to snoop -p PID process ID to snoop EXAMPLES
Default output, print file opens by process as they occur, # opensnoop Print human readable timestamps, # opensnoop -v See error codes, # opensnoop -e Snoop this file only, # opensnoop -f /etc/passwd FIELDS
ZONE Zone name UID User ID PID Process ID PPID Parent Process ID FD File Descriptor (-1 is error) FLAGS Flags passed to open ERR errno value (see /usr/include/sys/errno.h) CWD current working directory of process PATH pathname for file open COMM command name for the process ARGS argument listing for the process TIME timestamp for the open event, us STRTIME timestamp for the open event, string DOCUMENTATION
See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver- bose descriptions explaining the output. EXIT
opensnoop will run forever until Ctrl-C is hit. BUGS
occasionally the pathname for the file open cannot be read and the following error will be seen, dtrace: error on enabled probe ID 6 (...): invalid address this is normal behaviour. AUTHOR
Brendan Gregg [Sydney, Australia] SEE ALSO
dtrace(1M), truss(1) version 1.60 Jan 12, 2006 opensnoop(1m)
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