1 ;# pwd.pl - keeps track of current working directory in PWD environment var
3 ;# $Header: pwd.pl,v 4.0 91/03/20 01:26:03 lwall Locked $
6 ;# Revision 4.0 91/03/20 01:26:03 lwall
9 ;# Revision 3.0.1.2 91/01/11 18:09:24 lwall
10 ;# patch42: some .pl files were missing their trailing 1;
12 ;# Revision 3.0.1.1 90/08/09 04:01:24 lwall
13 ;# patch19: Initial revision
26 local($dd,$di) = stat('.');
27 local($pd,$pi) = stat($ENV{'PWD'});
28 return if $di == $pi && $dd == $pd;
30 chop($ENV{'PWD'} = `pwd`);
34 local($newdir) = shift;
36 if ($newdir =~ m#^/#) {
37 $ENV{'PWD'} = $newdir;
40 local(@curdir) = split(m#/#,$ENV{'PWD'});
41 @curdir = '' unless @curdir;
42 foreach $component (split(m#/#, $newdir)) {
43 next if $component eq '.';
44 pop(@curdir),next if $component eq '..';
45 push(@curdir,$component);
47 $ENV{'PWD'} = join('/',@curdir) || '/';