linux系统中,以下显示结果不同的是()。 A: echo The current working path is $PWD. B: echo 'The current working path is $PWD.' C: echo "The current working path is $PWD." D: echo "The current working path is `pwd`."
linux系统中,以下显示结果不同的是()。 A: echo The current working path is $PWD. B: echo 'The current working path is $PWD.' C: echo "The current working path is $PWD." D: echo "The current working path is `pwd`."
linux系统中,以下显示结果不同的是()。 A: Aecho The current working path is $PWD. B: Becho 'The current working path is $PWD.' C: Cecho "The current working path is $PWD." D: Decho "The current working path is `pwd`."
linux系统中,以下显示结果不同的是()。 A: Aecho The current working path is $PWD. B: Becho 'The current working path is $PWD.' C: Cecho "The current working path is $PWD." D: Decho "The current working path is `pwd`."
用什么命令来显示当前目录() A: echo $(pwd) B: echo pwd C: $pwd D: pwd | echo
用什么命令来显示当前目录() A: echo $(pwd) B: echo pwd C: $pwd D: pwd | echo
pwd
pwd
下列哪一个命令可以正确创建一个ORACLE数据库用户?() A: createuseruserididentifiedbypwd B: createuseruserididentifiedby"pwd" C: createuseruserididentified"pwd" D: createuseruseridby"pwd"
下列哪一个命令可以正确创建一个ORACLE数据库用户?() A: createuseruserididentifiedbypwd B: createuseruserididentifiedby"pwd" C: createuseruserididentified"pwd" D: createuseruseridby"pwd"
用于显示当前工作目录的命令是( )。 A: pwd B: pwd C: show D: cd
用于显示当前工作目录的命令是( )。 A: pwd B: pwd C: show D: cd
如要查看当前所在路径,除了用命令pwd外还可运行以下哪个命令? A: echo${PATH} B: echopwd C: echo$pwd D: echo${PWD}
如要查看当前所在路径,除了用命令pwd外还可运行以下哪个命令? A: echo${PATH} B: echopwd C: echo$pwd D: echo${PWD}
在tb_name表中创建一个名为name_view的视图,并设置视图的属性为name、pwduser,执行语句是什么?( ) A: CREATE VIEW name_view(name,pwd,user)AS SELECT name.pwd,user FROM tb_mame; B: SHOW VIEW name_view(name,pwd,user) AS SELECT name,pwd,user FROM tb_mame: C: DROP VIEW name_view(name,pwd,user) AS SELECT name,pwd,user FROM tb_mame: D: SELECT * FROM name_view(name,pwd,user) AS SELECT name,pwd,user FROM tb_ name:
在tb_name表中创建一个名为name_view的视图,并设置视图的属性为name、pwduser,执行语句是什么?( ) A: CREATE VIEW name_view(name,pwd,user)AS SELECT name.pwd,user FROM tb_mame; B: SHOW VIEW name_view(name,pwd,user) AS SELECT name,pwd,user FROM tb_mame: C: DROP VIEW name_view(name,pwd,user) AS SELECT name,pwd,user FROM tb_mame: D: SELECT * FROM name_view(name,pwd,user) AS SELECT name,pwd,user FROM tb_ name:
pwd命令功能是什么?
pwd命令功能是什么?
pwd命令的功能是
pwd命令的功能是