blank Change the permissions on the file f1 so that user has read, write, and execute, group has read and execute and others have read and execute.  Use octal format. ________________
chmod 755 f1

blank Change the permissions on the file f1 so that user has read, write, and execute, and others have read and execute.  Use symbolic format and absolute settings. ________________
chmod u=rwx,g=,o=rx f1

blank Change the permissions on the file f1 so that user has read, write, and execute, group has execute and others have execute.  Use symbolic format and use the settings that turn on specified permissions but don't bother with the permissions not specified. ________________
chmod u+rwx,g+x,o+x f1
chmod u+rw,a+x

blank Change the permissions on the file f1 so that user has read, write, and execute, group has read, write, and execute and others have read and execute.  AND turn the guid on, and the sticky bit.  Use octal format. ________________
chmod 3775 f1

blank Change the permissions on the file f1 so that suid bit is on and the sticky bit. Use symbolic format and just and those setting.  Don't worry about other permissions. ________________
chmod u+s,o+t f1

blank Set the umask so that any files created can have all permission on, no permissions on for group, and execute permission on for others. ________________
umask 076