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单选题
A user has written a script that is not running correctly and asks an administrator for help. Without adding anything to the script， how can the administrator determine the cause of the problem？（）
A
Run the script with an ’sh -x’ in front.
B
Run the script with a ’ksh -v’ in front.
C
Type debug into the command line before running the script.
D
Type ’set -x’ into the command line before running the script.
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By using a job scheduler such as cronB
By enabling automatic cluster verificationC
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By including the custom method name in the file /usr/es/sbin/cluster/etc/rc.authomethods
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