2, and all variables named as positive nonzero integers contain the values of the script parameters, or arguments. For example, say the name of the following script is pshow:1、 2和所有以正非零整数命名的变量都包含脚本参数或参数的值。 例如,假设以下脚本的名称是pshow: 代码语言:javascript 代码...
Script name:test.shFirst argument:helloSecond argument:world 说明 代表脚本名,1 代表第一个参数,$2代表第二个参数。 3. $#: 参数个数 它表示所有参数的个数。 #!/bin/bashecho"Number of arguments:$#" 运行脚本./test.sh hello world,输出Number of arguments: 2 4. $*: 所有参数 $*表示所有参数。
"shell script name=${0}" echo "===" echo "first args=${1}" echo "===" echo "second args=${2}" echo "===" echo "arguments number=$#" echo "===" echo "arguments list content=$@" echo "===
val=$(function_name) # val 变量存储了函数返回值 val=$(function_name 参数1 参数2... ) #...
shell script 是利用 shell 的功能所写的一个“程序 (program)”,这个程序是使用纯文本文件,将一些 shell 的语法与指令(含外部指令)写在里面, 搭配正则表达式、管道命令与数据流重导向等功能,以达到我们所想要的处理目的。为什么要学习使用shell script ?
/bin/bash# A small example program for using the new getopt(1) program.# This program will only work with bash(1)# An similar program using the tcsh(1) script language can be found# as parse.tcsh# Example input and output (from the bash prompt):# ./parse.bash -a par1 'another ...
The $# variable contains the number of arguments in the script. A handy way to iterate through all of the parameters passed involves the use of a while loop and the shift command. This command is what lets you iterate through all the arguments in the argument list (rather than remaining ...
The script uses CryptoKit to decrypt some data which was encrypted using a SymmetricKey. The script: #!/bin/bash # # DecryptScript.sh # # This script decrypts encrypted data using a symmetric key. # Check for the correct number of arguments if [ "$#" -ne 2 ]; then echo "Usage: ...
# Shell script v2# Run a shell script using Bash.- task:ShellScript@2inputs:scriptPath:# string. Required. Script Path.#args: # string. Arguments.# Advanced#disableAutoCwd: false # boolean. Specify Working Directory. Default: false.#cwd: # string. Optional. Use when disableAutoCwd = tru...
This script calculates the square of 5. ' ((area=5*5)) echo$area 注意多行注释是如何放置在内部的:“和”字符。 5.While循环 while循环构造用于多次运行某些指令。查看以下名为while.sh的脚本,以更好地理解此概念。 #!/bin/bash i=0 while[$i-le 2 ] ...