arguments, additional options, other than -fand-F, are ignored.When-pissupplied without name ar‐ guments, it will display the attributesandvaluesofall variables having the attributes specifiedbythe additional options.Ifno other options are suppliedwith-p,declarewill display the attributesandvaluesof...
$ ./checkarg x ./checkarg: line2:2: Two arguments are required $ ./checkarg'''./checkarg: line5:1: A non-empty argument is required $ ./checkarg x''./checkarg: line5:2: Two non-empty arguments are required $ ./checkarg x x Thank you. (5) ${#var}: 变量内容的长度 read...
首先是在cmd命令行中,比如test.java文件,javac test.java编译,接着 java test 123 456运行那么args[0]就是123 args[1]就是456,这里没有args...[2],访问会报异常 java.lang.ArrayIndexOutOfBoundsException 如果是在eclipse中,可以在Run--Run Configurations...选项--Arguments...的Program arguments输入参数...
echo "Number of arguments passed: $#" # Print all the arguments passed to the script echo "All arguments passed: $@" # Check the exit status of the last command echo "Exit status of the last command: $?" Output: Name of the script: Main.sh Number of arguments passed: 0 All argume...
for example let’s create & execute the test script with some parameters and note the bash arguments supplied as parameters : $test.sh aa bb cc dd #!/bin/sh echo “File name is ” $0 echo “First arg. is ” $1 echo “Second arg. is ” $2 ...
( echo ""$_F_QUERY_STRINGecho --Adding Arguments-- ) 1>&2 fi # # if there are arguments, use them as well. # for _F_PAR in$*; do _F_QUERY_STRING="$_F_QUERY_STRING""$_F_PAR""&" if [${DEBUG:-0}-eq 1 ] ; then ...
Note that$variableis actually a simplified form of${variable}. 如果变量在语句当中被引用,必须要使用${x}才可以,取得数组的变量值时候也需要使用${}来调用 查看变量 查看当前shell中的所有变量(all variables): set 如果查看当前shell中的环境变量(environment) ...
#use $@ to print out all arguments at once echo $@ ' -> echo $@' # use $# variable to print out # number of arguments passed to the bash script echo Number of arguments passed: $# ' -> echo Number of arguments passed: $#' ...
Once done, you can pass the desired amount of arguments and it will print all of them including numbers: 3. Using the*variable This is similar to the above method but uses the*variable. The only difference is that it stores the entire parameter as a single string. It still gets you the...
Special VariableDescription $0The name of the bash script. $1, $2...$nThe bash script arguments. $$The process id of the current shell. $#The total number of arguments passed to the script. $@The value of all the arguments passed to the script. ...