linux-chmod:changing permissions of ' XXXXXX ' operation not permitted

Workaround:

sudo chattr-i file

In the Perform chmod operation:

sudo chmod a+x file

chattr command to change file properties

Grammar:

Chattr (option)

8 modes:
A: Let the file or directory for additional purposes only; B: Do not update the last access time of the file or directory; C: Compress the file or directory, D: Exclude the file or directory from the dumping operation; I: do not arbitrarily change the file or directory; s: privacy delete files or directories; s: Update files or directories instantly ; u: Prevent accidental deletion.

-R: Recursive processing, all files and subdirectories under the instruction directory are processed together with the;-v< version number;: Sets the file or directory version;-V: Displays the instruction execution process;+< property;: Open the file or directory property;-< properties > : Closes the Item property of the file or directory;=< property;: Specifies the property of the file or directory.

linux-chmod:changing permissions of ' XXXXXX ' operation not permitted