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inline redirect stdin

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# 1  
Old 09-09-2008
inline redirect stdin
Hi:


I have the next script on ksh


#!/usr/bin/ksh
cd $FUENTES
qdesign <<-!
\$/opt/cognos/ph843e/bin/qtp <<-!
\$/opt/cognos/ph843e/bin/quiz <<-!
!
!
!

This script is very simple, i want to nest three process quiz into qtp, and this into qdesign.
When I run it , i receive the next error.

./aa[7]: !: not found
./aa[8]: !: not found

Why ?¿?¿

can i nest inline commads with input redir.


Regards
# 2  
Old 09-09-2008
I don't think you can, especially not with the same delimiter for them all. Perl has support for combining here documents but you still can't nest them there, only serialize.

Code:
perl -e 'print <<HERE; print <<THERE; print <<EVERYWHERE;
I am the walrus
HERE
The walrus was Paul
THERE
Happiness is a warm gun
EVERYWHERE
print "done.\n"'

But this is Perl only as far as I know.

What do you mean by nesting these, and how do you expect to achieve three of the "quiz" processes? Do you mean a pipeline, by any chance?

Code:
quiz | qtp | qdesign

That's still only one of each (pipes the output as quiz as the input to qtp, then the output from that as input to qdesign.)
Last edited by era; 09-09-2008 at 03:04 PM.. Reason: Pipeline speculation
# 3  
Old 09-09-2008
I also am confused, like Era, about what you are trying to achieve.

For the record, you can nest heredocs in ksh93 as shown by the following trivial example:
Code:
#!/usr/bin/ksh93

TMP=file.$$

cat <<< $(echo "first time") > $TMP

cat <<EOF1 >> $TMP
current date: $(date)
===================
$(cat <<EOF2
second time
current date: $(sleep 1; date)
===================
$(cat <<EOF3
third time
current date: $(sleep 1; date)
EOF3
)
===================
EOF2
)
EOF1

cat $TMP

rm $TMP

Code:
$ ./trivial
first time
current date: Tue Sep  9 21:48:52 EDT 2008
===================
second time
current date: Tue Sep  9 21:48:53 EDT 2008
===================
third time
current date: Tue Sep  9 21:48:54 EDT 2008
===================
$

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