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There are two mistakes in your commands. Your first mistake is that your file is not in a correct executable format. The first line of a shell script must start with #!. If it does not start with those characters, it is not a shell script. Some shells have workarounds for such incorrectly formatted shell scripts. But those workarounds are only in place ...


On Linux: chown: "Only a privileged process (Linux: one with the CAP_CHOWN capability) may change the owner of a file." (Source: chown(2)) The easy way to be such a process is to be run by root. See explain_chown for help finding out why a particular chown failed. See capabilities for ways to give processes that capability other than running as root. ...


rsync can also be used to change the file's permissions # rsync /bin/chmod /tmp/chmod --chmod=ugo+x # ls -al /tmp/chmod -rwxr-x--- 1 root root 52000 Sep 6 15:13 /tmp/chmod #

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