linux系统，把当前日期重定向到/tmp/date文件中，并不想覆盖原来的内容，下面正确的操作是（）。A、date/tmp/dateB、date/tmp/dateC、date 2/tmp/dateD、date /tmp/date
linux系统，把当前日期重定向到/tmp/date文件中，并不想覆盖原来的内容，下面正确的操作是（）。
- A、date>>/tmp/date
- B、date>/tmp/date
- C、date 2>/tmp/date
- D、date &>/tmp/date
相关考题：
在vi命令中可以运行UNIX的shell命令。若要在vi编辑器下运行date命令,输入( )并按enter键可以在屏幕上显示日期信息。 A.:/dateB.:!dateC.:?dateD.:.date
Evidence _________indicates that you attend to one idea at a time.A: of dateB: to dateC: of the dateD: to the date
Her sister cares much about fashion and her clothes were always.A.up to dateB.up-to dateC.up to-dateD.up-to-date
The more popular sequence of dating today is ________. A.date-month-yearB.year-date-monthC.month-year-dateD.date-year-month
查询最近30天的记录应俄用（ ）作为准则A. Between Date(1 And Date0—30B. Between Date一30 And DateC. =Date-30D. Date0-30
下列关于javA.util.Date类的描述中,错误的是?() A.无参的构造方法Date()，用来创建当前日期时间的Date对象B.在JDK的javA.util包中提供了一个Date类用于表示日期和时间C.推荐使用Date(int year,int month,int date)构造方法来创建Date对象D.接收一个long型参数date的构造方法Date(long date)，用于创建指定时间的Date对象
下列方法中,用于返回当前日期的方法是?() A.Date()B. Date(int year, int month, int date)C.Date(String s)D.Date(long date)
If the Sellers anticipate that，notwithstanding the exercise of due diligence by them，the Vessel will not be ready for delivery by the canceling date they may notify the Buyers in writing ______ stating the date when they anticipate that the Vessel will be ready for delivery.A.the date of declarationB.date of Notice of ReadinessC.the canceling dateD.the date of delivery
材料：A Passenger Ship Safety Certificate shall be issued for a period not exceeding 12 months．A Cargo Ship Safety Construction Certificate，Cargo Ship Safety Equipment Certificate and Cargo Ship Safety Radio Certificate shall be issued for a period specified by the Administration which shall not exceed five years．An Exemption Certificate shall not be valid for longer than the period of the certificate to which it refers.（i）When the renewal survey is completed within three months before the expiry date of the existing certificate，the new certificate shall be valid from the date of completion of the renewal survey to：（1）for a passenger ship，a date not exceeding 12 months from the date of expiry of the existing certificate；（2）for a cargo ship，a date not exceeding five years from the date of expiry of the existing certificate；（ii）When the renewal survey is completed after the expiry date of the existing certificate，the new certificate shall be valid from the date of completion of the renewal survey to：（1）for a passenger ship，a date not exceeding 12 months from the date of expiry of the existing certificate；（2）for a cargo ship，a date not exceeding five years from the date of expiry of the existing certificate；（iii）when the renewal survey is completed more than three months before the expiry date of the existing certificate，the new certificate shall be valid from the date of completion of the renewal survey to：（1）for a passenger ship，a date not exceeding 12 months from the date of completion of the renewal survey；（2）for a cargo ship，a date not exceeding five years from the date of completion of the renewal survey．问题：The valid period of an Exemption Certificate for Cargo Ship Safety Equipment Certificate shall be ________．A.longer than five yearsB.shorter than five yearsC.longer than 12 monthsD.shorter than 12 monthsWhen the renewal survey is completed within one month before the expiry date of the existing Cargo Ship Safety Construction Certificate，the new certificate shall be valid ________．A.from the date of completion of the renewal survey to a date not exceeding 12 months from the date of expiry of the existing certificateB.from the date of completion of the renewal survey to a date not exceeding five years from the date of expiry of the existing certificateC.from the date of expiry of the existing certificate to a date not exceeding 12 months from the dateD.from the date of expiry of the existing certificate to a date not exceeding five years from the dateIt can be concluded that the actual period of validity of a new Passenger Ship Safety Certificate is less than 12 months if the renewal survey is completed ________．A.4 months before its expiry dateB.3 months before its expiry dateC.2 months before its expiry dateD.after its expiry dateWhen the renewal survey is completed on a date which is 99 days before the expiry date of the existing Cargo Ship Safety Radio Certificate，the new certificate shall be valid ________．A.from the date of completion of the renewal survey to a date not exceeding 12 months from the date of expiry of the existing certificateB.from the date of completion of the renewal survey to a date not exceeding five years from the date of expiry of the existing certificateC.from the date of expiry of the existing certificate to a date not exceeding 12 months from the dateD.from the date of completion of the renewal survey to a date not exceeding five years from that date请帮忙给出每个问题的正确答案和分析，谢谢！
linux系统中，在/tmp存在一文件file，想更新文件的时间目录为当前的时间的命令是（）。A、mkdir /tmp/fileB、touch /tmp/fileC、mv /tmp/fileD、rm /tmp/file
在linux系统中，在/tmp下创建一个空文件file的命令是（）。A、mkdir /tmp/fileB、make /tmp/fileC、touch /tmp/fileD、mv /tmp/file
在linux系统中，当前路径为/tmp/test，将/tmp/test/oldfile更改为/tmp/test/newfile，以下命令错误的是（）。A、mv /tmp/test/oldfile newfileB、mv /tmp/test/oldfile /tmp/test/newfileC、mv oldfile /tmp/test/D、mv oldfile newfile
在linux系统中，当前路径为/tmp/test，将/tmp/test/oldfile更改为/tmp/test/newfile，以下命令正确的是（）。A、mv /tmp/test/oldfile newfileB、mv /tmp/test/oldfile /tmp/test/newfileC、mv oldfile newfileD、mv oldfile /tmp/test/newfileE、mv oldfile /tmp/test/
linux系统，把当前日期标准输出和标准出错信息重定向到/tmp/date文件中，下面正确的操作是（）。A、date/tmp/dateB、date/tmp/dateC、date2/tmp/dateD、date/tmp/date
在linux系统中，用cp命令将/tmp/test/file文件，复制到/tmp下，并保持原来的名字，以下命令中正确的是（）。A、cp -l /tmp/test/file /tmpB、cp -s /tmp/test/file /tmpC、cp -r /tmp/test/file /tmpD、cp /tmp/test/file /tmpE、cp /tmp/test/file /tmp/file
Stringdate＝"TodayisSunday"；把date转换成全小写的语句是（）A、toLowerCase（date）；B、date.toLowerCase（）；C、date.toUpperCase（）；D、toUpperCase（date）；
在VisualFoxpro中，运算结果是日期型数据的表达式有（）。A、DATE（）+YEAR（DATE（））B、{^01/01/03}+YEAR（DATE（））C、DATE（）-（"12/06/99"）D、DATE（）+20
For which action can you use the TO_DATE function? （）A、Convert any date literal to a dateB、Convert any numeric literal to a dateC、Convert any character literal to a dateD、Convert any date to a character literalE、Format '10-JAN-99' to 'January 10 1999'
The EMP table contains these columns: EMPLOYEE_ID NUMBER(4) EMPNAME VARCHAR2 (25) SALARY NUMBER(9,2) HIRE_DATE DATE You query the database with this SQL statement: SELECT empname,hire_date HIREDATE, salary FROM EMP ORDER BY hire_date; How will the results be sorted?（）A、randomlyB、ascending by dateC、descending by dateD、ascending alphabeticallyE、descending alphabetically
单选题在linux系统中，用cp命令将/tmp/test中的文件到/tmp/test1中，不想拷贝目录本身，以下命令正确的是（）。Acp -R /tmp/test /tmp/test1Bcp -r /tmp/test /tmp/test1Ccp -R /tmp/test/. /tmp/test1Dcp /tmp/test /tmp/test1
单选题linux系统，把当前日期标准输出和标准出错信息重定向到/tmp/date文件中，下面正确的操作是（）。Adate/tmp/dateBdate/tmp/dateCdate2/tmp/dateDdate/tmp/date
单选题linux系统，把当前日期重定向到/tmp/date文件中，并不想覆盖原来的内容，下面正确的操作是（）。Adate/tmp/dateBdate/tmp/dateCdate 2/tmp/dateDdate /tmp/date