OSX and Perl Scripts... Please Help!
Hi All,
I've recently taken up learning Perl, but I've hit a snag that seems to be new with the 10.1.4 update. In order for scripts to run, they must utilize Unix-style line feeds instead of Macintosh carriage returns.
I've tried using BBEdit to add the line feeds, but this doesn't seem to work (I've switched on this option in both the preferences pane and in the options pane that pops up from the Save dialog).
Jutus was kind to suggest the use of Project Builder's "Use Unix Line Endings" feature, but alas, no luck!
As it stands now, when I try to run a script in the terminal, I'm just given a new prompt.
Any thoughts or suggestions would be greatly appreciated.
TIA!
I've recently taken up learning Perl, but I've hit a snag that seems to be new with the 10.1.4 update. In order for scripts to run, they must utilize Unix-style line feeds instead of Macintosh carriage returns.
I've tried using BBEdit to add the line feeds, but this doesn't seem to work (I've switched on this option in both the preferences pane and in the options pane that pops up from the Save dialog).
Jutus was kind to suggest the use of Project Builder's "Use Unix Line Endings" feature, but alas, no luck!
As it stands now, when I try to run a script in the terminal, I'm just given a new prompt.
Any thoughts or suggestions would be greatly appreciated.
TIA!
Comments
<strong>Hi All,
I've recently taken up learning Perl, but I've hit a snag that seems to be new with the 10.1.4 update. In order for scripts to run, they must utilize Unix-style line feeds instead of Macintosh carriage returns.
I've tried using BBEdit to add the line feeds, but this doesn't seem to work (I've switched on this option in both the preferences pane and in the options pane that pops up from the Save dialog).
Jutus was kind to suggest the use of Project Builder's "Use Unix Line Endings" feature, but alas, no luck!
As it stands now, when I try to run a script in the terminal, I'm just given a new prompt.
Any thoughts or suggestions would be greatly appreciated.
TIA!</strong><hr></blockquote>
I use Perl heavily on OS X, and have not
experienced this difficulty. I use BBEdit, and
the Unix line endings definitely works fine.
Do you have a:
#!/usr/bin/perl -w
as the first line of your script?
When you get it working, you can run it right
inside BBEdit, no need for the terminal (though
I love it so).
Also, to run it from the terminal, you'll need
to:
chmod 755 yourscript.pl
or the equivalent.
Thanks for your reply.
I have two versions of BBEdit. An old full copy 5.1 and the lite version for OSX.
As far as I can tell, the old version (5.1) Perl tools only work with MacPerl. At any rate, the Perl menu refuses to show up when I run this older version.
The light version doesn't seem to have any capability to run or compile.
At any rate, I'd rather work in the terminal for now, at least.
The code is correct (shebang and all) and I have warnings switched on, but I can't even run "Hello, World."
I've tried:
chmod 755 myscript.pl
and
chmod +x myscript.pl
to no avail.
Any other ideas, perhaps?
Thanks again!
<strong>The code is correct (shebang and all) and I have warnings switched on, but I can't even run "Hello, World."
I've tried:
chmod 755 myscript.pl
and
chmod +x myscript.pl
to no avail.
Any other ideas, perhaps?
Thanks again!</strong><hr></blockquote>
Post the code! We'll get to the bottom of this.
I haven't tried scripting directly in the terminal. How do I run the script in that situation?
Tom - Thanks for hangin' in with me.
#!/usr/bin/perl -w
print "Hello, World.\
";
The script doesn't show any visible changes after I use the tools in either BBEdit or Project Builder to fix the line feeds. Should it?
Thanks for your assistance, guys. Much appreciated!
<strong>Hi Scott - Thanks for joining in!
I haven't tried scripting directly in the terminal. How do I run the script in that situation?
Tom - Thanks for hangin' in with me.
#!/usr/bin/perl -w
print "Hello, World.\
";
The script doesn't show any visible changes after I use the tools in either BBEdit or Project Builder to fix the line feeds. Should it?
Thanks for your assistance, guys. Much appreciated!</strong><hr></blockquote>
OK, the code is cool and works fine for me.
I'm a little confused by your saying 'I haven't tried scripting directly in the terminal. How do I run the script in that situation?"
How are you running it?
The way I tested your code was like this:
copy text from Omniweb
open Terminal.app
cat > test.pl
(paste from menu or command-v)
control-d
chmod 755 test.pl
./test.pl
This works fine...
[ 05-25-2002: Message edited by: Tom Mornini ]</p>
The comment about the terminal was a response to Scott's question (at least I thought it was).
I found my error in the last line of the procedure you outlined.
I typed test.pl instead of ./test.pl
I could have sworn I'd tried that!
At any rate, thanks a *million* for helping me out!
<strong>Hi Tom,
The comment about the terminal was a response to Scott's question (at least I thought it was).
I found my error in the last line of the procedure you outlined.
I typed test.pl instead of ./test.pl
I could have sworn I'd tried that!
At any rate, thanks a *million* for helping me out!</strong><hr></blockquote>
No problem! DOS always tried the current directory for executables, UNIX doesn't. It's a good thing! Prevents new software from installing a trojan into a file called 'ls' (or something else frequently used) when it's unpacked.
Imagine typing:
tar xfz newsoftware.tar.gz
ls
And having all of your data eliminated because newsoftware.tar.gz produced
an 'ls' in the same directory that contained:
#!/bin/sh
rm -rf ~/* # newbies, don't try this one at home!
Of course, if you want to subject yourself to such punishment, you can always add '.' to your $PATH environment variable, but I highly recommend against it. :-)
... if one where to get into a Mac scripting language now (I've just spent the past few years getting seriously into Java)... which is the best way to go?
Applescript?
or
Perl?
<strong>Just a quick question ...
... if one where to get into a Mac scripting language now (I've just spent the past few years getting seriously into Java)... which is the best way to go?
Applescript?
or
Perl?</strong><hr></blockquote>
Oh, hell, don't ask me!
I'm the biggest Perl biggot I know! :-)
Java is 1st class on OS X. Why not use that?
Applescript Studio is super cool. I'd LOVE to be able to build Cocoa UIs from Perl, and there's a sourceforge <a href="http://camelbones.sourceforge.net/"; target="_blank">project</a> to do just that...and there's also this fascinating <a href="http://dev.perl.org/macosx/"; target="_blank">tidbit</a>!
[ 05-27-2002: Message edited by: Tom Mornini ]</p>
"If you're interested in developing Mac OS X applications with Perl, look out for the forthcoming book 'Programming Cocoa Applications with Perl'" <img src="graemlins/surprised.gif" border="0" alt="[Surprised]" />
Lots of Perl geeks and other smart people answer questions about anything remotely related to BBEdit. Just don't mention non-Mac platforms if you don't want to be scolded.