progname=${0##*/} ## Get the name of the script without its path ## Default values verbose=0 filename= ## List of options the program will accept; ## those options that take arguments are followed by a colon optstring=f:v ## The loop calls getopts until there are no more options...
destinationDir=$2;shift2;; -a|--action)case"$2"in"copy"|"move") action=$2;shift2 ;; *) action="copy";shift2 ;;esac;; --)shift;break;; *)echo"Internal error!";exit1 ;;esacdone# Now take actionecho"$actionfile$fileNamefrom$sourceDirto$destinationDir" bash test.sh -f MyFile.t...
The first argument to your script is stored in$1, the second argument is stored in$2, etc, etc. An array of all of the arguments passed to your script is stored in$@, and we’ll discuss how to handle arrays later on in this chapter. The total number of arguments passed to your s...
我正在尝试将 find 的结果保存为数组。这是我的代码: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #!/bin/bashecho"input : "read input echo"searching file with this pattern '${input}' under present directory"array=`find . -name${input}`len=${#array[*]}echo"found : ${len}"i=0...
You provided two arguments. $ ./test.bash 1 Error: Exactly 2 arguments are required. $#: Returns the number of arguments passed. -ne: Numeric comparison for ‘not equal’. This script checks if 2 arguments are passed to the script. Let’s take more complex example: Use $# Variable ...
Function Arguments Similar to a shell script, bash functions can take arguments. The arguments are accessible inside a function by using the shell positional parameters notation like $1, $2, $#, $@, and so on. When a function is executed, the shell script positional parameters are temporarily...
Bash’s history expansion supports several ways to reference arguments in the previous command. Let’s take our echo command as an example to learn some commonly used expansions: !:^ –referencing the first argument -> “one“ !:$ –referencing the last argument -> “seven“ !:n –referenc...
This might take some getting used to, but when you get the hang of it you’ll never go back. Let’s say you are editing a file in vim (well, you wouldn’t use nano , would you?!), and now you want to go and look in the /var/www/html directory. You could quit vim, browse...
Next we calculate the factorial of 'num' using a loop and store the result in the 'result' variable. 4. Maximum and Minimum Functions: Write a Bash script that defines functions called maximum and minimum which take two numbers as arguments and print the maximum and minimum of the two, re...
Next, the dividend and divisor values are taken from the command line arguments. If the divisor value is equal to 0, an error is generated and the error message is printed in the error.txt file. The second “if” command is used to check whether the error.txt file is empty or not. ...