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Re^3: How to "source" a shell file in Perl?

by LanX (Canon)
on Jun 12, 2013 at 20:04 UTC ( #1038572=note: print w/ replies, xml ) Need Help??


in reply to Re^2: How to "source" a shell file in Perl?
in thread How to "source" a shell file in Perl?

Congratulations, works for me :)

open my $source,'-|',"bash /tmp/wrapper.sh" or die "$!"; my $dump= do { local $/; <$source>}; my $VAR1; eval $dump; print $VAR1->{MONK}; #> jfroebe

lanx@nc10-ubuntu:/tmp$ cat wrapper.sh . /tmp/src.sh perl -MData::Dumper -e' print Dumper \%ENV' lanx@nc10-ubuntu:/tmp$ cat src.sh export MONK=jfroebe lanx@nc10-ubuntu:/tmp$

Thats an extremely stable approach, I can't think of a way to make it break! =)

you could even try to generate the code from wrapper.sh dynamically on the fly, hence avoiding any security/dependencies issues.

Cheers Rolf

( addicted to the Perl Programming Language)

UPDATE

> you could even try to generate the code from wrapper.sh dynamically on the fly

works! =)

my $bashcode=<<'_bash_'; . /tmp/src.sh; perl -MData::Dumper -e "print Dumper \%ENV"; _bash_ open my $source, '-|', qq{bash -c '$bashcode'} or die "$!"; my $dump= do { local $/; <$source>}; my $VAR1; eval $dump; print $VAR1->{MONK}; #> jfroebe

UPDATE

far less code, same result

my $bashcode=<<'__bash__'; . /tmp/src.sh; perl -MData::Dumper -e 'print Dumper \%ENV'; __bash__ my $VAR1; eval qx{bash -c "$bashcode"}; print $VAR1->{MONK}; #> jfroebe


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Re^4: How to "source" a shell file in Perl?
by jfroebe (Vicar) on Jun 12, 2013 at 20:46 UTC
    Thanks :) It works even in the more oddly configured environments here.

    Jason L. Froebe

    Blog, Tech Blog

      I have to admit that it's kind of a genius solution I really didn't expected to be possible at first.

      But the credits go to Perl's awesome flexibility! =)

      Cheers Rolf

      ( addicted to the Perl Programming Language)

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