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 Octal mode is using numbers and sets the entire permissions of the file Character mode is using the letters and is generally used to just modify existing permissions chmod 755 sets rwxrxrx while chmod x adjusts permissions so that owner, group, and world all have executable permissions addedIn UNIX or UNIX based operating system, CHMOD is a command used to change the access permissions of file system The chmod numerical format accepts up to four octal digits The three rightmost digits define permissions for the file user, the group, and othersChmod ug=rw groupAgreementstxt sets read and write permissions for user and Group chmod 664 globaltxt sets read and write permissions for user and Group, and provides read to Others chmod 744 Show_myCVsh sets read, write, and execute permissions for user, and sets read permission for Group and Others chmod 1755 findResltssh Chmod Help Examples How To Use Chmod In Linux Ionos Chmod number codes