由于没有定义dummy变量,test $dummy经过 bash 扩展,得到的结果只有test,没有提供参数。 按照"0 arguments" 的说明,返回值为 false。 即,虽然test ""和test $dummy都返回 false,但是它们的参数个数不同,得出结果的原因也不同。 2 arguments $ test -y go; echo $? -bash: test: -y: unary operator expe...
Filename/home/music/.bashrc found Number of arguments is1
$ ./test.bash 1 1 You provided two arguments. $ ./test.bash 1 Error: Exactly 2 arguments are required. $#: Returns the number of arguments passed. -ne: Numeric comparison for ‘not equal’. This script checks if 2 arguments are passed to the script. Let’s take more complex example...
test: test [expr] Evaluate conditional expression. Exits with a status of 0 (true) or 1 (false) depending on the evaluation of EXPR. The behavior of test depends on the number of arguments. Read the bash manual page for the complete specification. String operators: -z STRING True if stri...
这个脚本可以通过以下命令来运行: 代码语言:bash 复制 ./script.sh arg1 arg2 arg3 输出结果如下: 代码语言:txt 复制 Number of arguments: 3 Argument: arg1 Argument: arg2 Argument: arg3 需要注意的是,在处理参数时,应该使用双引号"$@"来避免参数中包含空格或特殊字符时出现错误。相关搜索: ...
/bin/bash## Name: test-bucket-1## Purpose:# Performs the test-bucket number 1 for Product X.# (Actually, this is a sample shell script,# which invokes some system commands# to illustrate how to construct a Bash script)## Notes:# 1) The environment variable TEST_VAR must be set# (...
echo "Number of arguments: $#" echo "Scripts arguments: $@" echo "Scripts arguments separated in different variables: $1 $2..." # 读取输入: echo "What's your name?" read Name # 这里不需要声明新变量 echo Hello, $Name! # 通常的 if 结构看起来像这样: ...
/bin/bash echo "Hello from sagar" echo "Number of arguments passed to this script = $#" To put this script to the test, I passed 3 arguments while executing the script: And as you can see, it gave me an accurate number of passed arguments....
$ mantest 1. 我们创建一个名为 filetype.sh 的脚本,用来检查文件是常规文件、目录还是软链接: 复制 #!/bin/bashif[$#-ne1]; thenecho"Error: Invalid number of arguments"exitfifile=$1if[-f$file]; thenecho"$fileelif[ -L$file]; thenecho "$fileelif[-d$file]; thenecho"$fileelseecho"...
我有一段代码,试图匹配给定字符串中的单词“test”: str="some test string" if [ $str == *"test"* ]; then # [: too many arguments echo "string was found" else echo "string was not found" fi Output: 找不到字符串 Bash version: GNU bash, version 4.4.23(1)-release (x86_64-pc...