单选题 Which of the following commands makes /bin/foo executable by everyone but writable only by its owner?()
chmod 557 /bin/foo
chmod o+rwx.a+rx/bin/foo
chown 557 /bin/foo
chmod 755/bin/foo
单选题 You are looking for an executable file foo. Select the command that would search forfoo within directories set in the shell variable, PATH.()
locate
which
find
query
whereis
单选题 You ran out of space and added a eighth disk to your SCSI-1 system. When you try to start, the system no longer boots. What is most likely the cause of this problem?()
SCSI-1 supports only 8 devices including the adaptor.
SCSI-1 supports only 6 disks per adaptor.
There is a SCSI-ID conflict that causes that problem.
You forgot to set the SCSI-ID #8 for the new disk.
单选题 You have run out of disk space on a partition. Which of the following would be an easy way to move data to a new partition without reconfiguring the path to the data in existing applications?()
Run ext2fs ACL.
Use a hard link.
Use a symbolic link.
Use the loopback device.
Create a block device offset.
单选题 What is the difference between thE.remove and thE.purge action with the dpkg command?()
-remove removes the program, -purge also removes the config files
-remove only removes the program, -purge only removes the config files
-remove removes a package, -purge also removes all packages dependent on it
-remove removes only the package file itself, -purge removes all files related to the package
单选题 Which of these commands allows you to use shared libraries that are in /usr/local/lib?()
export LD_PRELOAD=/usr/local/lib
export LD_LIBRARY_PATH=/usr/local/lib
Idconfig /usr/local/lib
Idd/usr/local/lib
单选题 To allow a regular user account to mount and unmount a filesystem (for instance, a cdrom or floppy), which option need to be added to the corresponding line in /etc/fstab?()
nouidchk
alluser
user
auto
单选题 Which Debian package system command will list all partially installed packages and suggest how to get them correctly installed?()
dpkg-G
apt-get-u
dpkg-Dh
dpkg-l
apt-get-y
单选题 The command echo $! will produce what output?()
the process id of last background command
the exit status of the last command
the exit status of the last background command
the process id of the current shell
the name of the command being executed
单选题 Using vi, you want to save changes to the file myfile with :w!, but vi complains it cannot write to the file. Therefore, you want to check the write permissions on the file. To do this without leaving vi, you type:()
:!ls-I myfile
:/ls-l myfile
esc :Is -I myfile
:?ls-l myfile
海南西环高铁于去年底正式开通运营,全球首条环岛高速铁路诞生了。铁路最早出现在()
纵向偏离时,每个车辆转向架所承受的货物重量不得超过货车容许载重量的(),且两转向架承重之差不得大于10t。
采用过户转让的票据多指股票、政府债券和提单等。
周作人散文笔调从容闲逸,别有一种平淡悠远的趣味,其作品《零余者》《写在人生边上》都体现了这种风格。
关于女性输尿管下列哪项是正确的()
中国银行间市场交易商协会(以下简称交易商协会)负责受理企业债务融资工具的发行注册。交易商协会不接受注册的,企业可于( )后重新提交注册文件。
影响横封效果的因素有()
固定资产改良过程发生的变价收入应记入()。
简述脑梗死的治疗原则。
患者输注少白红细胞悬液约1小时时,出现呼吸急促,大汗淋漓,寒战,腰背部剧痛,心前区压迫感,心率120/分钟,呼吸30/分钟,血压75/45mmHg,体温39.8℃。随即出现血红蛋白尿。最可能的临床诊断是()