Question: Use this command to change a file's mode by (1) adding read and write permission for the group and (2) removing read and execute

Use this command to change a file's mode by (1) adding read and write permission for the group and (2) removing read and execute permission for users not members of the file owner's group. chmod g+rw, o-rx filename chmod g=rw, o=rw filename chmod a+rw, o-rw filename chmod a-rw, g+rw filename

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