单项选择题
A.Backup， unmount， remove， recreate and restore the filesystem.
B.Boot from mksysb tape and select Shrink filesystems on restore.
C.Unmount， run defragfs /usr and the reducefs -size n /usr commands.
D.Update the /image.data file with the desired size for /usr and reboot the system.
单项选择题 Given the following script， why does the output come out as an empty line instead of "dog"（）#!/bin/ksh $VAR=dog echo "${VAR}"
单项选择题 Whichofthefollowingcommandswouldanadministratorusetoaddstartupscriptstothesystemstartupprocess（）
单项选择题 Using splitvg to create a snapshot volume group of rootvg results in an error. What is the most likely cause of the error（）