$ perl -pe 's/(?<!\t|^)"(?!\t|$)/\\"/g' file
Variable length lookbehind not implemented in regex m/(?<!\t|^)"(?!\t|$)/ at -e line 1.

How i make the above command to work?

Is there some easy way to see file permissions in numerical form, like 755?

@FaheemMitha stat -c "%a %n" /path

@Ramesh Thanks. This was an question on AU, and there were a couple of answers, which surprisingly, were correct.

Sorry, I couldn't resist. :-)

I'm seeing this on apt-get update. Anyone else?

> W: Ignoring Provides line with DepCompareOp for package libuv-dev

@FaheemMitha bugs.debian.org/cgi-bin/bugreport.cgi?bug=762291

@Braiam Thanks

@FaheemMitha: See my answer askubuntu.com/a/526740/323845

@Gnouc Doesn't work with directories.

@FaheemMitha: Strange, how did you know that? What did you try?

@Gnouc I did.

@FaheemMitha: Can you give an example?

It must work normally with folder too

@Gnouc I tried it with a random directory. It gave 0000

You give mode as argument?

not mode*?

@Gnouc You're right, I used a non-existent directory. With the correct directory it gives the right answer. Still, your code should probably complain if the file or directory does not exist.

Unix tools are good at that.

yet another initd, uselessd

@FaheemMitha: Updated! And perl is also a Unix tools :)

@Gnouc It is? What about portability then?

@FaheemMitha: Almost modern Unix system has perl as default, and perl can run almost anywhere

@Gnouc Even windows?

stat is only on GNU Linux

@Gnouc Oh, I didn't know that.

@FaheemMitha: I haven't tested in Windows.

@Gnouc No, i meant, is perl available natively on Windows?

@FaheemMitha: Yes, perl can run on Windows, via ActivePerl or StrawberryPerl

learn.perl.org/installing/windows.html

activestate.com/activeperl/downloads

@Gnouc I see. So, really portable, then.

Weird, I'm being threatened by english.sx.

Wait! Some of your past questions have not been well-received, and you're in danger of being blocked from asking any more.

What is that SE extension that lets me see up/down votes? and is it easy to enable?

@FaheemMitha search for post vote breakdown

@Braiam ok

@FaheemMitha you know something that do this?

@Braiam I don't think anything like this exists. At least I have never heard of it. And thsi question might be a better fit on tex.sx.

TeX isn't the kind of thing that lends itself to wizards.