Ithasbeendeterminedthatprintjobsfromanapplicationarenotbeingremovedfromthesystemaftertheyhavebeenprinted.Toremovethesejobsfromthe／var／spooldirectory,whichcronentrywillremovefilesmorethan7daysold?() A.find/var/spool/lpd/qdir-mtime-7-typef-execrm-f{}\B.find-name/var/spool/*-frm{}\C.find-name/var/spool/lpd/*-execrm{}\D.find/var/spool/lpd/qdir-mtime+7-typef-execrm-f{}\
Ithasbeendeterminedthatprintjobsfromanapplicationarenotbeingremovedfromthesystemaftertheyhavebeenprinted.Toremovethesejobsfromthe／var／spooldirectory,whichcronentrywillremovefilesmorethan7daysold?()
A.find/var/spool/lpd/qdir-mtime-7-typef-execrm-f{}\
B.find-name/var/spool/*-frm{}\
C.find-name/var/spool/lpd/*-execrm{}\
D.find/var/spool/lpd/qdir-mtime+7-typef-execrm-f{}\
相关考题：
Which directory does the Junos OS use to store syslog information by default?() A. /var/messagesB. /var/syslogC. /var/tmpD. /var/log
To which directory does the Junos OS write traceoptions files?() A. /var/tmp/B. /var/C. /var/log/D. /var/home/username/
以下程序的输出结果是( )。 Dim var1 Dim var2 Dim var3 var1 = "Hello" var2 = "World !" var3 = var1" "var2 var1 = 10 var2 = 20 MsgBox var1 + var2A．Hello World! 30B．30C．102D．Hello World!
An operator needs to change from the ／usr／bin to the ／var／spool directory. Which of the following commands will accomplish this?() A. cd /var/spoolB. lcd /var/spoolC. cd /usr/bin /var/spoolD. lcd /usr/bin /var/spool
根据下面的定义，F0（3+4)的输出结果是_______（注意没有空格）#define F1（var) printf（"var=%d", var) #define F0（var) F1（var * var) 根据下面的定义，F0（3+4)的输出结果是_______（注意没有空格）#define F1（var) printf（"var=%d", var) #define F0（var) F1（var * var)
设随机变量X的方差存在，Var（X)＞0，则以下结论正确的是A．Var(X) ＞ Var(1－X)B．Var(X) ＜ Var(1－X)C．Var(X) = Var(1－X)D．Var(X) + Var(1－X) = 1
（X,Y)是二维随机向量，下列命题与Cov（X,Y)=0等价的是A．E(XY)=E(X)E(Y)B．Var(XY)= Var(X)Var(Y)C．Var(X+Y)=Var(X)−Var(Y)D．Var(X−Y)=Var(X) −Var(Y)
22、设随机变量X的方差存在，Var（X)＞0，则以下结论正确的是A．Var(X) ＞ Var(1－X)B．Var(X) ＜ Var(1－X)C．Var(X) = Var(1－X)D．Var(X) + Var(1－X) = 1
下列哪个函数表达式可以计算变量var1,var2和var3的平均值？ （）A．mean(var1, var3)B．mean(var1-var3)C．mean(of var1-var3)D．mean(of var1,var3)