在bash shell中，break命令用于立即终止当前循环的执行。例如，以下是一个使用break命令的for循环示例：#break out of a for loopfor var in {1..9}do echo "The next number is $var" if [ $var -eq 5 ] then break fidone 在这个示例中，当变量var的值为5时，整个循环将被立即终止。【con...
Next, execute the script as shown in the following. Watch how we get the Bash “for” loop iterating the items in the variable placeholder as expected. That’s how the Bash “for” loop works in its basic form. Working with Ranges The “for” loop is mainly used when you want to wo...
当在进入 bash 循环之前知道迭代次数时,通常使用 for 循环。Bash 支持两种 for 循环。bash for 循环的第一种形式是: forvarnameinlistdocommands ##Bodyofthe loop done 在上面的语法中: for、in、do 和 done 是关键字 列表是具有项目列表的任何列表 varname 是任何 Bash 变量名。 在这种形式中,for 语句执...
for I in 1 2 3 4 5do statements1 #Executed for all values of ”I”, up to a disaster-condition if any. statements2 if (condition) then continue #Go to next iteration of I in the loop and skip statements3 fi statements3done 此脚本备份命令行中指定的所有文件名。如果.bak文件存在,它将...
For example, let us use the continue statement to iterate through a range of number and when it reaches a specific number, which in this case will be ‘4’, the continue statement will exit the iteration and go back to the beginning of the loop to begin the next iteration. for i in...
Next. $result is checked for any content. If it is not empty then a message will print. forloop5.sh text="Bash Scripting Language" for c in {A..Z} do result=`printf "$text" | awk "/$c/"` if [[ $result != "" ]] then echo "$c exists in the text" fi done Run the ...
“ for循环”是bash编程语言的语句,它允许重复执行代码。 for循环被归类为迭代语句,即bash脚本中进程的重复。 例如,您可以运行UNIX命令或任务5次,或使用for循环读取和处理文件列表。 可以在shell提示符下或在shell脚本本身内使用for循环。 更详细信息 请看: Bash For Loop Examples In Linux for循环语法 数字范围的...
Break- Exits the loop and skip any pending iterations. Continue- Skip the current iteration and pass the control back to the for loop to execute the next iteration. To check if they are bash built-in or not, usetypecommand: $ type break continue ...
Bash For Loop 示例 1. 解压所有 Zip 文件 以下示例在根目录中查找与“*.zip*”匹配的文件列表,并在该 zip 文件所在的相同位置创建一个新目录,并解压缩该 zip 文件内容。 # cat zip_unzip.sh #! /bin/bash # Find files which has .zip for file in `find /root -name "*.zip*" -type f` do...
The one thing you need is to write down the syntax. The introduction to the basics will help you a lot. In this article, we have mostly talked about the Bash For Loop, but there are other loops as well that you need to learn which will be demonstrated in the next article....