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Full Discussion: glob not matching all files in perl
Top Forums Shell Programming and Scripting glob not matching all files in perl Post 302608547 by odyssey on Saturday 17th of March 2012 10:43:18 PM
Old 03-17-2012
glob not matching all files in perl
I encountered a weird issue with globbing in perl not returning all files, while I was testing out a script for recursive dir-processing on my Synology NAS.

Basically it didn't show (/match?) all the files in a specific directory. If I move the file to a different directory or even rename it, it STILL doesn't show, as if something is wrong with the file.

If I copy the file to a new file, neigher of the files are showing.

I can pipe more data into the file and touch it - It doesn't make a difference until I create a new file (e.g. pipe new data into it, thus overwriting it):

Code:
/volume1/share/script # ls -l /volume1/share/testdir/
-rwxrwxrwx    1 admin    users            0 Mar 18 02:33 testfile1
-rwxrwxrwx    1 admin    users    7659671691 Mar 18 03:05 testfile2
 
 
/volume1/share/script # perl -e 'foreach (</volume1/share/testdir/*>) { print $_,"\n"; }'
/volume1/share/testdir/testfile1
 
 
/volume1/share/script # touch /volume1/share/testdir/testfile2
 
 
/volume1/share/script # perl -e 'foreach (</volume1/share/testdir/*>) { print $_,"\n"; }'
/volume1/share/testdir/testfile1
 
 
/volume1/share/script # echo "more data" >> /volume1/share/testdir/testfile2
 
 
/volume1/share/script # perl -e 'foreach (</volume1/share/testdir/*>) { print $_,"\n"; }'
/volume1/share/testdir/testfile1
 
 
/volume1/share/script # echo "new data" > /volume1/share/testdir/testfile2  
 
 
/volume1/share/script # perl -e 'foreach (</volume1/share/testdir/*>) { print $_,"\n"; }'
/volume1/share/testdir/testfile1
/volume1/share/testdir/testfile2

This has caused some serious headscratching... The closest thing I got while googling, was someone claiming that glob is heavily buggy.

I'm open to alternatives, but I hope they are not too different, since I've already made a pretty huge script based on the browse-function. I guess I could simply call the 'ls' command itself, but it would be nice to have something more perl-native.

Since I can't post URL's yet, I'll paste the browse script here (for good measure):
Code:
sub browse($);

sub browse($)
{
    my $path = $_[0];

    if($path !~ /\/$/)
    { $path .= '/'; }

    for my $eachFile (glob($path.'*'))
    {

        if(-d $eachFile)
        { browse($eachFile); }
        else
        { print "$eachFile\n"; }
    }
}

browse("/volume1/share/testdir/");

Last edited by odyssey; 03-17-2012 at 11:51 PM..
 

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LEARN ABOUT CENTOS

radwho

RADWHO(1)							 FreeRADIUS Daemon							 RADWHO(1)

NAME

       radwho - show online users

SYNOPSIS

       radwho [-c] [-d raddb_directory] [-F radutmp_file] [-i] [-n] [-N nas_ip_address] [-p] [-P nas_port] [-r] [-R] [-s] [-S] [-u user] [-U user]
       [-Z]

DESCRIPTION

       The FreeRADIUS server can be configured to maintain an active session database in a file called radutmp. This utility shows the content	of
       that session database.

OPTIONS

       -c     Shows caller ID (if available) instead of the full name.

       -d raddb_directory
	      The directory that contains the RADIUS configuration files. Defaults to /etc/raddb.

       -F radutmp_file
	      The file that contains the radutmp file.	If this is specified, -d is not necessary.

       -i     Shows the session ID instead of the full name.

       -n     Normally radwho looks up the username in the systems password file, and shows the full username as well. The -n flags prevents this.

       -N nas_ip_address
	      Show only those entries which match the given NAS IP address.

       -p     Adds an extra column for the port type - I for ISDN, A for Analog.

       -P nas_port
	      Show only those entries which match the given NAS port.

       -r     Outputs all data in raw format - no headers, no formatting, fields are comma-separated.

       -R     Output all data in RADIUS attribute format.  All fields are printed.

       -s     Show full name.

       -S     Hide shell users. Doesn't show the entries for users that do not have a SLIP or PPP session.

       -u user
	      Show only those entries which match the given username (case insensitive).

       -U user
	      Show only those entries which match the given username (case sensitive).

       -Z     When  combined  with -R, prints out the contents of an Accounting-Request packet which can be passed to radclient, in order to "zap"
	      that users session from radutmp.

       For example,

	      $ radwho -ZRN 10.0.0.1 | radclient -f - radius.example.net acct testing123

       will result in all an Accounting-Request packet being sent to the RADIUS server, which tells the server that the  NAS  rebooted.   i.e.	It
       "zaps" all of the users on that NAS.

       To "zap" one user, specifiy NAS, username, and NAS port:

	      $ radwho -ZRN 10.0.0.1 -u user -P 10 | radclient -f - radius.example.net acct testing123

       Other combinations are also possible.

SEE ALSO

       radiusd(8), radclient(1), radiusd.conf(5).

AUTHOR

       Miquel van Smoorenburg, miquels@cistron.nl.

								    17 Feb 2013 							 RADWHO(1)
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