echo $PWD
echo $pwd
echo $CWD
echo $cwd
第1题:
显示用户的主目录的命令是什么()
A.echo$HOME
B.echo$USERDIR
C.echo$ECHO
D.echo$ENV
第2题:
在UNIX系统中,Shell程序______实现显示用户主目录以及当前命令的进程标识符。
A.echo UserHome directorY:$LOGNAME
echo Carrent shell'Ss PID:$$
B.echo UserHome directory:$HOME
echo Carrent shell'PID:$@
C.echo UserHome directory:$LOGNAME
echo Carrent shell's PID:$@
D.echo UserHome directory:$HOME
echo Carrent shell's PID:$$
A.
B.
C.
D.
第3题:
When you use the ping command to send ICMP messages across a network, what's the most common request/reply pair you'll see? (Select one answer choice)
A.Echo request and Echo reply
B.ICMP hold and ICMP send
C.ICMP request and ICMP reply
D.Echo off and Echo on
E.None of the above
第4题:
在linux系统中,在执行()命令后,用户tang不能执行at命令。
第5题:
A. export PATH=pwd
B. export PATH=$PWD
C. export PATH=$PATH:pwd
D. export PATH=$PATH:$PWD
第6题:
A.ls
B.pwd
C.ll
D.echo
第7题:
在Unix系统中,Shell程序(57)实现显示用户主目录以及当前命令的进程标识符。
A.echo UserHome directory:$LOGNAME echo Current shell's PID:$$
B.echo UserHome directory:$HOME echo Current shell's PID:$@
C.echo UserHome directory:$LOGNAME echo Current shell's PID:$@
D.echo UserHome directory:$HOME echo Current shell's PlD:$$
第8题:
在UNIX系统中,Shell程序(21)实现显示用户主目录以及当前命令的进程标识符。
A.echo UserHome directory:$LOGNAME echo Current shell's PID:$$
B.echo UserHome directory:$HOME echo Current shell'PID:$@
C.echO UserHOme directOIy:$LOGNAME echo Current shell'sPID:$@
D.echo UserHome directory:$HOME echo Current shell'sPID:$$
第9题:
在UNIX系统中,Shell程序(19)实现显示用户主目录以及当前命令的进程标识符。
A.cho UserHome directory:$LOGNAME echo Carrent shell's PID:$$
B.echo UserHome directory:$HOME echo Carrent shell's PID:$@
C.echo UserHome directory:$ LOGNAME echo Carrent shell's PID:S@
D.echo UserHome directory:$HOME echo Carrent shell's PID:$$
第10题:
linux系统中,以下显示结果相同的是()。