Re: "echo" vs. local print: "echo" is invoking an external command (New process), opening a file, and appending to it.
Doing that in perl would avoid the "process creation", and command parsing overhead (Probably nanoseconds, so no big deal). But, being a perl bigot, I'd prefer seeing it in perl. 
open my $log, ">>", "$path/register_list.txt" or die "Cannot append:$!
+";
print $log join( ",",$date,$client_ip,$client_imsi,$bsid),"\n";
close $log;

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Re: Using a Database:
You could, potentially , have a BSID table, annd a CLIENT table, in addition to the log line,to track items. Dates would be better organized, and searching and filtering is easy to do.

I have a simple cgi application that presents the contents of a Sqlite DB, to a web page, enabling queries. This is why I would prefer a database.

        This is not an optical illusion, it just looks like one.

In reply to Re^3: snmpget is missing some values by NetWallah
in thread snmpget is missing some values by leostereo

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