How can I give permission for the
www-data user of Ubuntu machine to execute a command installed in
First of all, run the following command:
If there is no "x" (execute) permission for other users, run this command to give read/write/execute permissions to owner, read/execute permission to group and read/execute permission to other users.
Also file may not run for other reasons besides permissions - inaccessible shared libraries, wrong PATH in environment + running via short name, inaccessible interpreter (if it's a script) etc.