Linux execute sh file

Linux execute sh file ... bash, run this my_script.sh (and not another executable my_script.sh somewhere else in the System files): User @ host: ~ $ ./my_script.sh -bash: ./my_script.sh: authorization denied ok, bash didn't like it. What does permission mean? As you've seen yourself, the My_Scriptscript.sh file is simply a text file, without ... ................
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