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What does read and execute permissions mean?
Read & execute: Allows users to view and run executable files, including scripts. List folder contents: Permits viewing and listing of files and subfolders as well as executing of files; inherited by folders only.
What does execute access mean for a file that is not an executable program?
Basically it means you can tell the operating system to run the code in the file. For example, if the file was a binary executable, read access would allow you to view it, write access would allow you to modify it, but without execute permissions you would not be able to run the program.
Is it possible to execute a program that is in a directory for which you do not have read permission?
Execute permission doesn’t apply to directories (a directory can’t also be a program). But that permission bit is reused for directories for other purposes. Execute permission is needed on a directory to be able to cd into it (that is, to make some directory your current working directory).
Can a script run even when it is not set as?
File permissions will have effect if you really execute the script itself : Note that file permissions are not supported by non-Linux filesystems, like FAT. So even if you run chmod -x file.sh, the file will still have it’s former permissions. Execute permission is enforced by the filesystem.
What’s the difference between read and execute permissions?
As for security, this permissions are only an issue when your server is accessible by other (not from your team) users and this was mainly happening when people where using hosting services where they were not getting dedicated operating system but there was one operating system and all the users where uploading their data there.
Is it possible to execute a script in Bash?
So, for scripts, the execute bit just makes it a bit more convenient to execute it. As long as bash is executable, you can always run bash with the script file as argument, or run bash interactively and copy paste the script line by line into your terminal to have the commands executed.
What’s the difference between read and execute LINUX files?
The webserver (apache, nginx,…) will serve any image files them by reading them, not executing them – same for any other files – regardless if accessed directly or not. Also, the Linux file permission is given from the machine itself – here, the user will be the user running the webserver instance – usually a linux user named like “www-data”.