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What does the @ in ls -al mean?

When doing an ls -l some files are tagged with "@" like this:

-rw-r--r--@ 1 master staff 2074042 Feb 3 19:26 openssh-5.1p1-vs-openbsd.diff

What does that mean?

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marked as duplicate by Arjan, Diago Feb 8 '10 at 1:07

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Duplicate of, among others, "What does the @ in ls -al mean?" at superuser.com/questions/87467/what-does-the-in-ls-al-mean –  Arjan Feb 7 '10 at 22:04

1 Answer 1

up vote 2 down vote accepted

They are extended attributes. ls -l@ shows them (mostly they are flags to indicate that the file is coming from the internet, in those cases, when opening the file (or installing a DMG) MacOS will ask if you really want to open it). The xattr command allows you to change them.

There is another one too. ls -lO (upper case O) shows the flags set via chflags command. ls -lO@ shows the file in it's full glory.

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I was sure I had chcked "man ls" duh –  Nicholaz Feb 7 '10 at 20:57

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