Re: $^I

Chas. Owens wrote:
> On May 11, 2008, at 18:04, Richard Lee wrote:
>
>> I just looked it up on perldoc perlvar, but I am still not sure what 
>> it does.
>>
>>
>>
>> $^I     The current value of the inplace-edit extension.  Use "undef" 
>> to disable inplace editing.  (Mnemonic: value of -i
>>             switch.)
>>
>> I was reading perl cookbook and saw this example, and was wondering 
>> what that is....
>>
>>
>> if (@ARGV) {
>>  $^I = ".orig";
>> } else {
>>   warn "$0: Reading from stdin\n" if -t STDIN;
>> }
>
>
> Setting $^I turns on in-place-editing*.
>
> * http://perldoc.perl.org/perlrun.html#*-i*[_extension_]
>
> -- 
> Chas. Owens
> wonkden.net
> The most important skill a programmer can have is the ability to read.
>
thanks, after reading that I ran the file and now I understand. thanks!!

 51817 -rw-r--r--  1 root  root       409 2008-05-12 05:35 yahoo.orig
 51812 -rw-------  1 root  root      4472 2008-05-12 05:35 .viminfo
 51690 -rw-r--r--  1 root  root       410 2008-05-12 05:35 yahoo
 49153 drwxr-x--- 31 root  root      4096 2008-05-12 05:35 .
[root@RLEE ~]# cat yahoo.orig
analysed   =>  analyzed
built-in   =>  builtin
chastized  =>  chastised
commandline => commnad-line
de-allocate => deallocate
dropin   =>  drop-in
hardcode => hard-code
meta-data => metadata
multicharacter => multi-character
multiway => multi-way
non-empty => nonempty
non-profit => nonprofit
pre-define => predefine
preextend => pre-extend
re-compiling => recompiling
reenter => re-enter
turnkey => turn-key
[root@RLEE ~]# cat yahoo
analyzed   =>  analyzed
builtin   =>  builtin
chastised  =>  chastised
commnad-line => commnad-line
deallocate => deallocate
drop-in   =>  drop-in
hard-code => hard-code
metadata => metadata
multi-character => multi-character
multi-way => multi-way
nonempty => nonempty
nonprofit => nonprofit
predefine => predefine
pre-extend => pre-extend
recompiling => recompiling
re-enter => re-enter
turn-key => turn-key