Re: perl script inside a shell script

[eg]

It's strange and terrible and I'm not sure how to get something out of the perl part, but this sort of works (with bash, at least):

#!/bin/sh

echo This is bash
i=12
echo $i

perl <<__HERE__
print "This is perl\n";
my \$i = $i;
print ++\$i . "\n";
__HERE__

echo This is bash again
echo $i

Good luck with it (although I'm not quite sure what you hope to gain.)

[chipmunk]

Very nice! As another way of doing it, using quotes around the here-doc terminator saves you from having to backslash all those special characters.

#!/bin/sh

echo This is bash
i=12
echo $i

perl - $i <<'__HERE__'
my $i = shift;
print "This is perl\n";
print ++$i . "\n";
__HERE__

echo This is bash again
echo $i

Because << is a redirection to STDIN, in order to add $i to the command line I also had to add - so that perl would know to read the script from STDIN.

[Blue]

Ewwww.

I was thinking that it would be pretty trivial to embed Perl one liners in the shell script. This, on the other hand is just ... just .. well, I don't know. Not right. Not even wrong. It just is.

Hmmm. Barring something like this, or a perl one-liner, I can't think of any easy way to do it in one script that starts as a shell. The shebang (#!) is a one-time-deal, no changing type mid way though.

BTW, just for curiosity, could you have the base be a Perl program that called shell script stuff? The requirement to have shell and Perl in the same file is somewhat unusual.

=Blue
...you might be eaten by a grue...