Proc::ProcessTable(3) Perl extension to access the unix process table


use Proc::ProcessTable;
$p = new Proc::ProcessTable( 'cache_ttys' => 1 );
@fields = $p->fields;
$ref = $p->table;


Perl interface to the unix process table.


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.

Returns a list of the field names supported by the module on the current architecture.
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:


The priority and pgrp methods also allow values to be set, since these are supported directly by internal perl functions.


 # A cheap and sleazy version of ps
 use Proc::ProcessTable;
 $FORMAT = "%-6s %-10s %-8s %-24s %s\n";
 $t = new Proc::ProcessTable;
 printf($FORMAT, "PID", "TTY", "STAT", "START", "COMMAND"); 
 foreach $p ( @{$t->table} ){
 # Dump all the information in the current process table
 use Proc::ProcessTable;
 $t = new Proc::ProcessTable;
 foreach $p (@{$t->table}) {
  print "--------------------------------\n";
  foreach $f ($t->fields){
    print $f, ":  ", $p->{$f}, "\n";


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.


D. Urist, [email protected]