sourcing a perl script on cygwin

[Brian Dessent]

Florin Barbalau wrote:

> then If i run:
> $ /cygdrive/d/cdb_10_2/content/bin/system/ifssetenv.pl
> it works ok.
> 
> but if I try to source as in the calling script (install_cdaa.sh) I
> get error messages. :
> $ . /cygdrive/d/cdb_10_2/content/bin/system/ifssetenv.pl
>  bash: use: command not found
> bash: use: command not found
> bash: /cygdrive/d/cdb_10_2/content/bin/system/ifssetenv.pl: line 31:
> syntax erro
> r near unexpected token `$^O'
> bash: /cygdrive/d/cdb_10_2/content/bin/system/ifssetenv.pl: line 31:
>  `if (lc($^O
> ) eq "mswin32")'
> 
> do you have any ideea why?

You have a misunderstanding of what sourcing means.  When you tell the
shell to source a file it expects to read shell commands from that
file.  It doesn't expect to find foreign commands in another language
like perl, and it doesn't honor the shebang since that is just a comment
in shell syntax.  When you run a script, as opposed to sourcing it, the
OS (in this case Cygwin) reads the shebang line (#!/bin/perl) to know
what program to use to interpret the script, which is why that works.

Brian

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