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 .
[EMAIL PROTECTED] ~]# 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
[EMAIL PROTECTED] ~]# 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

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  • $^I Richard Lee
    • Re: $^I Chas. Owens
      • Re: $^I Richard Lee

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