单项选择题
During system boot， the boot process hangs at LED 0551.
Which of the following is a likely cause（）
A.A network problem
B.corrupted filesystem
C.corrupted ODM
D.corrupted /etc/inittab file
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相关考题
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Whichcronentrywillrun/usr/local/bin/myscriptat0500everySaturday（）
A.5 0 * * 6 /usr/local/bin/myscript
B.6 * * 5 0 /usr/local/bin/myscript
C.0 5 * * 6 /usr/local/bin/myscript
D.0 5 6 * * /usr/local/bin/myscript -
单项选择题
A System p administrator wants to NFS mount a filesystem from server "alpha" to server "bravo". Which of the following commands should be issued from "bravo" to determine which filesystems are being exported by server "alpha"（）
A.lsexport alpha
B.showmount -e alpha
C.exportfs -l alpha
D.mount -e nfs alpha -
单项选择题
A System p administrator wishes to create a template file to monitor performance. Having found a template from January， how can the administrator create a July template without destroying the original January version （）
A.vi jan.template ：%s/Jan/Jul/g ：w jul.template ：q!
B.cat jan.template sed s：Jan：Jul： > jan.template
C.vi jan.template ：1，$ replace Jan Jul [Esc] ZZ
D.vi jan.template ：w jul.template ：1，$ s/Jan/Jul/g ：q!
