[prog] check if script parent process is "init"

[Riccarda Cassini]

John Clarke wrote:
> On Wed, Apr 21, 2004 at 08:35:35AM +0200, dominik schramm wrote:
> 
> > $ cat caller.sh
> > #!/bin/sh
> > . callee
> > 
> > $ cat callee
> > #!/bin/bash
> > # contains bash specific syntax
> > ...
> > My thought was that this couldn't work.
> 
> It'll work fine, because the kernel uses the first line of the script
> (the part after "#!") to find the handler.  caller.sh can only contain
> sh commands because it's being run by /bin/sh, but callee is being run
> by /bin/bash so it can include anything that bash understands. 

(sorry for jumping in on your thread, Dominik)

I'm not sure I understand. I thought the point Dominik was trying to
make was about *sourcing* the script, and that commands in the sourced
file have to be understood by the interpreter that sources the file.

Just tried it with bash + perl:

  #!/bin/bash
  
  . ./sourced.pl
  
  echo "done."

with "sourced.pl" being:

  #!/usr/bin/perl

  print "in perl\n";


When I try to run this, I get:

  ./test.sh: print: command not found
  done.

Doesn't this mean that the shell cannot handle perl's print command?

(Mind you, I just began to do some serious shell programming, only a
couple of days ago, so I could be misunderstanding something
completely...  no flames please :-)

Riccarda



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