單項(xiàng)選擇題What command is not used to list the files idss001, idss002, idss003?()

A.ls-Xidss00[123]
B.lsidss0*
C.lsidss[*]0[0-9]
D.lsidss[0-9]0[0-9]


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1.單項(xiàng)選擇題How could you install the file idss-1.8.8-7.i386.rpm?()

A.rpm-installidss-1.8.8-7.i386.rpm
B.rpm-Uvhidss-1.8.8-7.i386.rpm
C.rpm-eidss-1.8.8-7.i386.rpm
D.rpm-ivhidss-1.8.8-7.i386.rpm

2.單項(xiàng)選擇題What service is used to transfer files?()

A.DNS
B.FTP
C.SMTP
D.None of the above

3.單項(xiàng)選擇題關(guān)于定期任務(wù)調(diào)度,需要在每周五晚上22:30執(zhí)行備份程序,下面正確的寫法是?()

A.30 22()()5/home/idss/backup.sh>/dev/null 2>&1
B.30 225()()/home/idss/backup.sh>/dev/null 2>&1
C.30 22()5()/home/idss/backup.sh>/dev/null 2>&1
D.30()/22()()5/home/idss/backup.sh>/dev/null 2>&1

4.單項(xiàng)選擇題

在shell中,定義如下:
stock=(""shenshi""""hushi""""chuangyeban"")
stock[1]=hello
stock[2]=world"
()

A.執(zhí)行echo"$stock[1],$stock[2]",結(jié)果為:hello[1],world[2]
B.執(zhí)行echo${stock[1]},${stock[2]},結(jié)果為:hello[1],world[2]
C.執(zhí)行echo${stock[@]},結(jié)果為:2018 hello world
D.執(zhí)行echo${stock[*]},結(jié)果為:shenshi hushi chuangyeban

5.單項(xiàng)選擇題在Linux系統(tǒng)中,能夠改變文件所有者的命令是?()

A.touch
B.chmod
C.chown
D.change