Space after filename (Linux)

Question

Whats different "name.txt" vs "name.txt " in Linux?

If I rename name.bin to name.txt - is normal and file doesn't executable.

If I rename name.bin to file.txt (with space after filename) - file will be executable.

Please prove that assertion, as it is a bit difficult to believe. — RudiC, Oct 20 '18 at 15:41
what did you use to "rename" `name.bin` to `file.txt\ `? if you use `cp name.bin file.txt\ ` and `file.txt\ ` already exists and is executable, it will stay that way; `cp` without the `-p` flag won't change its permissions. — , Oct 20 '18 at 15:42
Perhaps you're failing to invoke the correct filename? Demonstrate what you're doing so we can follow along. — Jeff Schaller, Oct 20 '18 at 17:33
@ctrl-alt-delor https://attack.mitre.org/wiki/Technique/T1151 — 69 420 1970, Oct 20 '18 at 17:54
@interesting, but not a Linux thing, it is a file manager thing. So you are changing weather the file-manager attempts to execute it (not weather it is executable). A simpler solution is to prevent downloaders from setting the execute bit. — ctrl-alt-delor, Oct 20 '18 at 17:59
@Ctrl-alt-delor it might be a GUI file manager thing though. I might try this out. — roaima, Oct 20 '18 at 18:52

score 2 · Accepted Answer · edited Oct 20 '18 at 17:54

2

Whether the file is executable (or not) is a matter of permissions, not of the name.

Use chmod a+x to make it executable and chmod a-x to disallow it. Full details here:

edited Oct 20 '18 at 17:54

ctrl-alt-delor

answered Oct 20 '18 at 15:40

Frenzie

1 Answers1