1 ;# pwd.pl - keeps track of current working directory in PWD environment var
3 ;# $Header: pwd.pl,v 3.0.1.1 90/08/09 04:01:24 lwall Locked $
6 ;# Revision 3.0.1.1 90/08/09 04:01:24 lwall
7 ;# patch19: Initial revision
20 local($dd,$di) = stat('.');
21 local($pd,$pi) = stat($ENV{'PWD'});
22 return if $di == $pi && $dd == $pd;
24 chop($ENV{'PWD'} = `pwd`);
28 local($newdir) = shift;
30 if ($newdir =~ m#^/#) {
31 $ENV{'PWD'} = $newdir;
34 local(@curdir) = split(m#/#,$ENV{'PWD'});
35 @curdir = '' unless @curdir;
36 foreach $component (split(m#/#, $newdir)) {
37 next if $component eq '.';
38 pop(@curdir),next if $component eq '..';
39 push(@curdir,$component);
41 $ENV{'PWD'} = join('/',@curdir) || '/';