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I got the following output when I apply ls -l command in my Mac OS X Mavericks for an image file:

enter image description here

I understand what does -rw-r--r-- mean. But what does the @ sign and the number next to it mean? Is similar feature available in Linux?

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The "@" means that the file has extended attributes. You can see them with the xattr command. The "1" is the number of links to that file. In most cases, for normal files, this will be "1". For directories, it is the number of files/subdirs + 2 (the two actually represents the directory itself, and the parent directory).

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