AI代码解释 \d 本地端时间的日期;\l 显示第几个终端机接口;\m显示硬件的等级(i386/i486/i586/i686...);\n 显示主机的网络名称;\O显示 domain name;\r操作系统的版本(相当于 uname-r)\t 显示本地端时间的时间;\S操作系统的名称;\v 操作系统的版本。 例题 如果你在 tty3 的进站画面看到如下显示
可以使用read命令来实现。read命令用于从标准输入读取用户输入的值,并将其赋给一个变量。 具体用法如下: ``` read variable_name ``` 其中,variable_name是...
tered, an attemptismadetodefine afunctionusing``-f foo=bar'', an attempt is made to assign avaluetoareadonlyvariable, an attemptismadetoassign a valuetoan array variable withoutusingthe compound assignment syntax (see Arrays above), oneofthe namesisnota valid shell variable name, an attempti...
在--query参数中使用变量'$variableName''$variableName''$variableName' 有多种不同的方法可将变量信息返回到控制台屏幕,但echo在大多数情况下均有效。 对比如下: Bash:echo $varResourceGroup PowerShell:echo $varResourceGroup Cmd:echo %varResourceGroup% ...
echo 'Please enter your name.' #Here we are reading the standard input and assigning it to the variable name with the read command. read name #We are now going back to standard output, by using echo and printing your name to the command line. ...
-O/--remote-name 把输出写到该文件中,保留远程文件的文件名 -p/--proxytunnel 使用HTTP代理 --proxy-anyauth 选择任一代理身份验证方法 --proxy-basic 在代理上使用基本身份验证 --proxy-digest 在代理上使用数字身份验证 --proxy-ntlm 在代理上使用ntlm身份验证 -P/--ftp-port 使用端口地址,而不是使用...
variable is not evaluatedecho'The value of the location variable is $location'# The value of the $location variable is not evaluatedaz group create--name$resourceGroup--location$location# Notice that the space in the $location variable is not ignored and the command fails as it treats the ...
${variable:pos}: 偏移pos个字符,取余下的子串 name=jerry,name:2结果为rryname:2结果为rry{variable:pos:num}: 偏移pos个字符,取num个字符长度的子串 name=‘hello world’, ${name:2:5}结果为“llo w” 字符串处理,将来在bash中经常用的
shells expand the ENV variable and commands are read and executed from the file whose name is ...
name="Marcela": This line declares a variable named 'name' and assigns it the value "Marcela". In Bash, variables are declared and assigned values without specific data type. echo "The value of the variable 'name' is: $name": This line uses the "echo" command to print a message to ...