ProcessTable(3) User Contributed Perl Documentation ProcessTable(3) NAME Proc::ProcessTable - Perl extension to access the unix process table SYNOPSIS use Proc::ProcessTable; my $p = Proc::ProcessTable->new( 'cache_ttys' => 1 ); my @fields = $p->fields; my $ref = $p->table; DESCRIPTION Perl interface to the unix process table. METHODS new Creates a new ProcessTable object. The constructor can take the following flags: enable_ttys -- causes the constructor to use the tty determination code, which is the default behavior. Setting this to 0 disables this code, thus preventing the module from traversing the device tree, which on some systems, can be quite large and/or contain invalid device paths (for example, Solaris does not clean up invalid device entries when disks are swapped). If this is specified with cache_ttys, a warning is generated and the cache_ttys is overridden to be false. cache_ttys -- causes the constructor to look for and use a file that caches a mapping of tty names to device numbers, and to create the file if it doesn't exist. This feature requires the Storable module. By default, the cache file name consists of a prefix /tmp/TTYDEVS_ and a byte order tag. The file name can be accessed (and changed) via $Proc::ProcessTable::TTYDEVSFILE. fields Returns a list of the field names supported by the module on the current architecture. table Reads the process table and returns a reference to an array of Proc::ProcessTable::Process objects. Attributes of a process object are returned by accessors named for the attribute; for example, to get the uid of a process just do: $process->uid The priority and pgrp methods also allow values to be set, since these are supported directly by internal perl functions. EXAMPLES # A cheap and sleazy version of ps use Proc::ProcessTable; my $FORMAT = "%-6s %-10s %-8s %-24s %s\n"; my $t = Proc::ProcessTable->new; printf($FORMAT, "PID", "TTY", "STAT", "START", "COMMAND"); foreach my $p ( @{$t->table} ){ printf($FORMAT, $p->pid, $p->ttydev, $p->state, scalar(localtime($p->start)), $p->cmndline); } # Dump all the information in the current process table use Proc::ProcessTable; my $t = Proc::ProcessTable->new; foreach my $p (@{$t->table}) { print "--------------------------------\n"; foreach my $f ($t->fields){ print $f, ": ", $p->{$f}, "\n"; } } CAVEATS Please see the file README in the distribution for a list of supported operating systems. Please see the file PORTING for information on how to help make this work on your OS. AUTHOR D. Urist, durist AT frii.com SEE ALSO Proc::ProcessTable::Process, perl(1). perl v5.16.3 2018-02-01 ProcessTable(3)
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