linux-compatible ps options

misc-scripts/density_feature/vega_gene_density.pl

@@ -237,7 +237,7 @@ foreach my $object ($big_chr, $small_chr) {
 		print STDERR join(",", map { $num{$gene_types{$_}} || 0 }
 				  sort keys %gene_types);
 		print STDERR " | ";
-		print STDERR "Mem: " . `ps $$ -o vsz |tail -1`;
+		print STDERR "Mem: " . `ps -p $$ -o vsz |tail -1`;
 	    }
 	    
 	    

modules/Bio/EnsEMBL/Utils/ConversionSupport.pm

@@ -730,7 +730,7 @@ sub finish_log {
 
 sub date_and_mem {
     my $date = strftime "%Y-%m-%d %T", localtime;
-    my $mem = `ps $$ -o vsz |tail -1`;
+    my $mem = `ps -p $$ -o vsz |tail -1`;
     chomp $mem;
     return "[$date, mem $mem]";
 }
@@ -761,7 +761,7 @@ sub date {
 =cut
 
 sub mem {
-    my $mem = `ps $$ -o vsz |tail -1`;
+    my $mem = `ps -p $$ -o vsz |tail -1`;
     chomp $mem;
     return $mem;
 }