Re: User Name in OS X +
Re: User Name in OS X +
- Subject: Re: User Name in OS X +
- From: John W Baxter <email@hidden>
- Date: Thu, 24 Oct 2002 00:08:11 -0700
At 9:51 +0100 10/23/2002, John Delacour wrote:
>
>We need to incorporate more obscure "stuff". Therefore, this additional
>
>method:
>
>
>
>set cmd to "perl -e \"@p = getpwnam `whoami`;\""
>
>set cmd to cmd & " -e 'print \"$p[6]\";'"
>
>
>
>do shell script cmd
>
>
>
I can't work out why this doesn't work if I put the first bit in
>
single quotes. Can you enlighten me please.
Putting the first "line" in single quotes precludes expansion of the
`whoami` stanza by the shell (I didn't tumble to the fact that it was the
shell doing that work until after I posted, although I instinctively used
the double quotes for that part).
And that rather glib paragraph glosses over the fact that perl is perfectly
willing to do `command` itself. So the reason the first command below
"works" and the second doesn't
[john@Zeus john]$perl -e 'print `whoami`'
john
[john@Zeus john]$perl -e 'print getpwnam `whoami`'
[john@Zeus john]$
isn't clear to me...why doesn't the second print the array contents? Running
$x = `whoami`;
print "$x\n";
inside a file certainly prints the result of whoami. Is this some
limitation of the -e environment????
Putting the second "line" in single quotes saved a whole lot of additional
backslashing, since I needed the double quotes in the print argument to get
the interpolation. I was too lazy to count \s. Unfortunately, the fonts I
use in Script Debugger and Eudora make "' or '" look like triple quotes
(which certainly aren't ASCII ;-)).
>
>
>
I find this slightly less obscure:
>
>
do shell script "perl -e '
>
@p = getpwnam $ENV{USER} ;
>
print $p[6] '"
I fully agree. Nicely done!
Your way is "better". But not so much fun. And I failed to see it.
TIMTOWTDI ;-) [1]
--John
[1]
http://www.linux-france.org/prj/jargonf/T/TIMTOWTDI.html
(First Google "hit", but my early 1950s Jr High School French is "enough"
for this page.)
--
John Baxter email@hidden Port Ludlow, WA, USA
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