For instance, we use the if statement to terminate the for loop once the current item is the same as ‘Diamond.’ for element in Gold Silver Diamond Platinum; do if [[ "$element" == 'Diamond' ]]; then break fi echo "Element: $element" done echo 'All Done!' Continue Statement Simi...
linux for bash 原创 ggvylf 2015-01-20 22:25:16 1443阅读 bash脚本:if循环 单分支的if语句: if 判断条件; then statement1 statement2 ... fi 例如: 如果用户已存在,则显示已存在 #!/bin/bash NAME = TEST if id $NAME &> /dev/null ; then echo "user exists" fi 双分支的if语句: if 判...
mysql中loop语句的使用 说明 1、loop实现了一个简单的循环,退出循环的条件需要用其他语句定义,通常可以使用leave语句实现。...2、若没有为statement_list添加退出循环的语句,则loop语句可用于实现简单的死循环。...实例 `[begin_label:] LOOP statement_list END LOOP [end_label]` 以上就是mysql中loop...
A 'for loop' is a bash programming language statement which allows code to be repeatedly executed. A for loop is classified as an iteration statement i.e. it is the repetition of a process within a bash script. Tutorial details For example, you can run UNIX command or task 5 times or ...
You can do early exit with break statement inside the for loop. You can exit from within a FOR, WHILE or UNTIL loop using break. General break statement inside the for loop: forIin12345dostatements1 #Executedforall values of''I'', up to a disaster-conditionifany. ...
问Bash:嵌套在for循环中的If语句EN介绍 if case 等语句。 条件判断语句 字符串判断 str1 = str2 ...
bash shell if-statement while-loop m3u 我正在编写一个脚本来解析m3u文件。目标是检索变量标记和url。我用这个文件做了测试。 #!/bin/bash echo "name,tvg-id,tvg-name,tvg-country,group-title,languages,url" while IFS= read -r line; do tags_detect="$(echo "$line" | grep -Eo '^#EXTINF:')...
While ‘else if’ is a powerful tool for handling multiple conditions in bash scripting, it’s not the only one. An alternative approach is the ‘case’ statement. ‘Case’ statements can be more readable and easier to maintain than a long list of ‘elif’ conditions, especially when you’...
An if statement always tests for a boolean condition to evaluate to true or false. The then, else if (elif), and else are clauses to the if statement. What is the syntax of a Bash If Statement? In Bash, the if statement is part of the conditional constructs of the programming ...
# Conditional statement if [[ $name == “John” ]]; then echo “Hello, John!” else echo “Hello, Stranger!” fi “` 6. 循环:在脚本中使用循环可以重复执行一组命令。常见的循环包括for循环和while循环。例如: “` # For loop for i in {1..5}; do ...