2 # @(#)dotsh.pl 03/19/94
4 # This library is no longer being maintained, and is included for backward
5 # compatibility with Perl 4 programs which may require it.
6 # This legacy library is deprecated and will be removed in a future
9 # In particular, this should not be used as an example of modern Perl
10 # programming techniques.
12 # Author: Charles Collins
15 # This routine takes a shell script and 'dots' it into the current perl
16 # environment. This makes it possible to use existing system scripts
17 # to alter environment variables on the fly.
20 # &dotsh ('ShellScript', 'DependentVariable(s)');
24 # 'ShellScript' is the full name of the shell script to be dotted
26 # 'DependentVariable(s)' is an optional list of shell variables in the
27 # form VARIABLE=VALUE,VARIABLE=VALUE,... that 'ShellScript' is
28 # dependent upon. These variables MUST be defined using shell syntax.
31 # &dotsh ('/foo/bar', 'arg1');
32 # &dotsh ('/foo/bar');
33 # &dotsh ('/foo/bar arg1 ... argN');
38 local($tmp,$key,$shell,$command,$args,$vars) = '';
42 @dotsh = split (/\s/, $dotsh);
43 $command = shift (@dotsh);
44 $args = join (" ", @dotsh);
45 $vars = join ("\n", @sh);
46 open (_SH_ENV, "$command") || die "Could not open $dotsh!\n";
48 $shell = "$1 -c" if ($_ =~ /^\#\!\s*(\S+(\/sh|\/ksh|\/zsh|\/csh))\s*$/);
51 if ($ENV{'SHELL'} =~ /\/sh$|\/ksh$|\/zsh$|\/bash$|\/csh$/) {
52 $shell = "$ENV{'SHELL'} -c";
54 print "SHELL not recognized!\nUsing /bin/sh...\n";
55 $shell = "/bin/sh -c";
58 if (length($vars) > 0) {
59 open (_SH_ENV, "$shell \"$vars && . $command $args && set \" |") || die;
61 open (_SH_ENV, "$shell \". $command $args && set \" |") || die;
71 foreach $key (keys(%ENV)) {
72 $tmp .= "\$$key = \$ENV{'$key'};" if $key =~ /^[A-Za-z]\w*$/;