1 ;# pwd.pl - keeps track of current working directory in PWD environment var
3 ;# $Header: pwd.pl,v 3.0.1.2 91/01/11 18:09:24 lwall Locked $
6 ;# Revision 3.0.1.2 91/01/11 18:09:24 lwall
7 ;# patch42: some .pl files were missing their trailing 1;
9 ;# Revision 3.0.1.1 90/08/09 04:01:24 lwall
10 ;# patch19: Initial revision
23 local($dd,$di) = stat('.');
24 local($pd,$pi) = stat($ENV{'PWD'});
25 return if $di == $pi && $dd == $pd;
27 chop($ENV{'PWD'} = `pwd`);
31 local($newdir) = shift;
33 if ($newdir =~ m#^/#) {
34 $ENV{'PWD'} = $newdir;
37 local(@curdir) = split(m#/#,$ENV{'PWD'});
38 @curdir = '' unless @curdir;
39 foreach $component (split(m#/#, $newdir)) {
40 next if $component eq '.';
41 pop(@curdir),next if $component eq '..';
42 push(@curdir,$component);
44 $ENV{'PWD'} = join('/',@curdir) || '/';