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: /usr/share/doc/lsof/examples/ [ drwxr-xr-x ]
name : count_pf.perl #!/usr/bin/perl # # count_pf.perl-- run lsof in repeat mode and count processes and # files sub interrupt { print "\n"; exit 0; } $RPT = 15; # lsof repeat time # Set path to lsof. if (($LSOF = &isexec("../lsof")) eq "") { # Try .. first if (($LSOF = &isexec("lsof")) eq "") { # Then try . and $PATH print "can't execute $LSOF\n"; exit 1 } } # Read lsof -nPF output repeatedly from a pipe. $| = 1; # unbuffer output $SIG{'INT'} = 'interrupt'; # catch interrupt $proc = $files = $proto{'TCP'} = $proto{'UDP'} = 0; $progress="/"; # used to show "progress" open(P, "$LSOF -nPF -r $RPT|") || die "can't open pipe to $LSOF\n"; while (<P>) { chop; if (/^m/) { # A marker line signals the end of an lsof repetition. printf "%s Processes: %5d, Files: %6d, TCP: %6d, UDP: %6d\r", $progress, $proc, $files, $proto{'TCP'}, $proto{'UDP'}; $proc = $files = $proto{'TCP'} = $proto{'UDP'} = 0; if ($progress eq "/") { $progress = "\\"; } else { $progress = "/"; } next; } if (/^p/) { $proc++; next; } # Count processes. if (/^f/) { $files++; next; } # Count files. if (/^P(.*)/) { $proto{$1}++; next; } # Count protocols. } ## isexec($path) -- is $path executable # # $path = absolute or relative path to file to test for executabiity. # Paths that begin with neither '/' nor '.' that arent't found as # simple references are also tested with the path prefixes of the # PATH environment variable. sub isexec { my ($path) = @_; my ($i, @P, $PATH); $path =~ s/^\s+|\s+$//g; if ($path eq "") { return(""); } if (($path =~ m#^[\/\.]#)) { if (-x $path) { return($path); } return(""); } $PATH = $ENV{PATH}; @P = split(":", $PATH); for ($i = 0; $i <= $#P; $i++) { if (-x "$P[$i]/$path") { return("$P[$i]/$path"); } } return(""); }