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I downloaded a .pem file and my Mac OS X (10.8.2) added an @ sign at the end of the file permissions. This is causing file permission issues.

I can't seem to remove the quarantine flag. I even tried the command

xattr -d <filename>.pem 

but that didn't work.

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up vote 2 down vote accepted

First, use ls -l@ to see what extended attributes are attached to the file. Normally, a downloaded file will have xattrs named "" and maybe "". To remove them, you can delete them individually with e.g. xattr -d filename.pem, or clear all xattrs with xattr -c filename.pem

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Thanks for this. Worked like a charm!! – Das Jan 9 at 7:40

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