How to solve the problem of insufficient permissions when executing files in centos

Modifying permissions can solve this problem.

You can use the chmod command to modify permissions.

Syntax: chmod [-cfvR] [--help] [--version] mode file...

Description: Linux/Unix file calling permissions are divided into three levels: File ownership person, group, other. Use chmod to control how files are accessed by others.

Parameters:

mode: Permission setting string, the format is as follows: [ugoa...][[ -=][rwxX]...][,...], Among them,

u represents the owner of the file, g represents the person who belongs to the same group as the owner of the file, o represents other people, and a represents all three.

means adding permissions, - means canceling permissions, = means only setting permissions.

r means readable, w means writable, x means executable, and X means only when the file is a subdirectory or the file has been set to be executable.

-c : If the file permissions have indeed been changed, only display the change action

-f : If the file permissions cannot be changed, do not display the error message

- v : Display detailed information of permission changes

-R : Make the same permission changes to all files and subdirectories in the current directory (that is, change them one by one in a recursive manner)

-- help : Display auxiliary instructions

--version : Display version

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