Linux

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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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You can't cd or ls in a folder if you have no +x permissions on it. That is all. I wasted 3 hours of my life. (szmer.info)

submitted 1 year ago by unsaid0415@szmer.info to c/linux@lemmy.ml

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[–] lloram239@feddit.de 40 points 1 year ago (1 children)

ls reaction to this is unexpected:

$ mkdir foo
$ echo Foo > foo/file
$ chmod a-x  foo
$ ls -l foo
ls: cannot access 'foo/file': Permission denied
total 0
-????????? ? ? ? ?            ? file

I expected to just get a "Permission denied", but listing the content it can still do. So x is for following the name to the inode and r for listing directory content (i.e. just names)?

[–] Zoidberg@lemm.ee 2 points 1 year ago

You can still read the contents of the directory because you have -r on it. If you just run ls foo you'll see your file on there, no problem.

However, without -x you cannot read metadata in that directory. That's why all information about the file shows as question marks.