Thus, in simple terms, a Bash While loop is used for automating commands in Bash scripting. Bash While loop example A While loop in a Bash script will trigger a series of commands to run repeatedly for as long as the condition result is “True.” Below is an example of Bash While loop...
until循环 until 语句在语法和功能上与 while 语句非常相似。两者之间唯一真正的区别是,当条件表达式为假时,直到语句执行其代码块,而当条件表达式为真时,while 语句执行其代码块。 syntax: until expression do commands #body of the loop done 在上面的 bash until 语法中: where until, do, done 是关键字 表...
两者之间唯一真正的区别是,当条件表达式为假时,直到语句执行其代码块,而当条件表达式为真时,while 语句执行其代码块。 syntax:until expressiondocommands #bodyofthe loop done 在上面的 bash until 语法中: where until, do, done 是关键字 表达式 任何条件表达式 Bash until Example 5. 监控日志文件 此示例监视...
Using a "do while" loop in bash scripting is simple. Here, ‘-le’ keywords indicate the "less than or equal" sign of a normal programming language. The following script will run until the variable's value is greater than five. #!/bin/bash echo "Do while loop example" a=1 while [...
A 'for loop' is a bash programming language statement which allows code to be repeatedly executed. A for loop is classified as an iteration statement i.e. it is the repetition of a process within a bash script. Tutorial details For example, you can run UNIX command or task 5 times or ...
In this example, the break statement will skip the while loop when user enters -1, otherwise it will keep adding two numbers: #!/bin/bashwhile:doread-p"Enter two numnbers ( - 1 to quit ) : "a bif[$a-eq-1]thenbreakfians=$((a + b))echo$ansdone ...
While using bash for loop helps automate VPS management tasks, it’s also important to leverage your web hosting provider’s features to further improve server administration efficiency. For example, Hostinger VPS plans haveBrowser terminalbuilt into our hosting custom control panel,hPanel. It lets ...
,可以使用while循环结构来实现。while循环会在条件为真时重复执行一段代码,直到条件为假。 以下是一个示例代码: 代码语言:txt 复制 #!/bin/bash result="" count=0 while [[ $(echo "$result" | wc -w) -ne 1 ]]; do # 执行需要循环的操作,例如调用某个命令获取结果 result=$(your_command) count...
The ‘While’ Loop The ‘while’ loop performs a set of commands as long as a certain condition is true. Here’s an example: count=1 while [ $count -le 5 ]; do echo "Count: $count"; ((count++)); done # Output: # Count: 1 ...
while-loop 将运行直到表达式测试为真。will run while the expression that we test for is true. 关键字"break" 用来跳出循环。而关键字”continue”用来不执行余下的部分而直接跳到下一个循环。 for-loop表达式查看一个字符串列表 (字符串用空格分隔) 然后将其赋给一个变量: ...