A nested loop is a loop within a loop. When working with arrays, you might find a situation where you need to loop through multiple arrays simultaneously. For example, you might have a script that needs to compare the elements of two arrays. Here’s an example: fruits=('apple''banana''...
echo "This script needs at least $MINPARAMS command-line arguments!" fi echo exit 0 运行代码: bash test30.sh 1 2 10 The name of this script is "test.sh". The name of this script is "test.sh". Parameter #1 is 1 Parameter #2 is 2 --- All the command-line parameters are: 1 ...
Using the for loop, it is straightforward to read the predefined strings or array. Here is an example of how you can use the for loop. In the example, we will take the input value of a text that has multiple words that will be taken after executing the script. We will use the for...
In Bash, you can use the ‘foreach’ loop to iterate over an array. Here’s an example: fruits=("Apple""Banana""Cherry")forfruitin"${fruits[@]}";doecho"I love$fruit";done# Output:# I love Apple# I love Banana# I love Cherry ...
nano forloop.shIt should contain the script below:#!/bin/bash for (( n=2; n<=10; n++ )) do echo "$n seconds" doneThe script prints out numbers from 2 to 10 while adding the seconds keyword to it.8. Create an ArrayA bash array is a data structure designed to store information...
ShellCheck - A shell script static analysis tool ShellCheck is a GPLv3 tool that gives warnings and suggestions for bash/sh shell scripts: The goals of ShellCheck are To point out and clarify typical beginner's syntax issues that cause a shell to give cryptic error messages. ...
6.循环loop 6.1 while do done, until do done (不定循环) 6.2 for...in...do...done (固定循环) 6.5 for...do...done 的数值处理 7.shell script的追踪与debug 四、补充 1.打印进度条 2.文件描述符(参考第一章18小节) 3.进程检测
jpg Array: Current stooge: curly Current stooge: larry Current stooge: moe Command substitution: bigmath.sh is a bash script condexif.sh is a bash script forloop.sh is a bash script letsread.sh is a bash script manyloops.sh is a bash script math.sh is a bash script nested.sh is a...
在bash script中,>用来把stdout的输出导向某个文件,2>用以把stderr的输出导向某个文件,&>不区分,既导stdout,又导stderr。另外,>>可以用来append,也就是不会覆盖原有的文件,相反,他把输出加在原来文件的最后。 ls&> ls_dir.txt 上面的命令会把ls的结果写入ls_dir.txt。
echo "The name of this script is \"$0\"." echo "The name of this script is \"`basename $0`\"." echo if [ -n "$1" ] # 测试变量被引用. then echo "Parameter #1 is $1" # 需要引用才能够转义"#" fi if [ -n "$2" ] then echo "Parameter #2 is $2" fi if [ -n "${...