In the above code, multiple conditions are used using the OR operator. To achieve a complex behavior, multiple conditions can also be used with the while loop using logical operators that include AND (&&), OR (||), or NOT (!). Bash while Loop Increment and Decrement The loop structure ...
whileloops can be used with lists but are also useful for conditions that donothave a known limit. You can use it to run commandswhilea condition is true (or invert the logic and run it while the condition is false). So, while (pun intended) there are different ways to perform loops,...
In this example, the ‘while’ loop continues to echo the count as long as the count is less than or equal to 5. The((count++))command increments the count after each iteration. The ‘Until’ Loop The ‘until’ loop is similar to the ‘while’ loop, but it performs a set of comma...
While one can use the for loop for numbers and strings, programmers can even leverage the same to repeat over a range. For example, we will state an array - Players and iterate over each of the elements of the range. PLAYERS=('Cristiano Ronaldo' 'Lionel Messi' 'Iker Casillas') for pla...
Linux Bash Script loop syntax All In Oneshell 编程之流程控制 for 循环、while 循环和 until 循环forfor var in item1 item2 ... itemN do command1 command2 ... commandN done for var in item1 item2 ... itemN; do command1; command2… done; while...
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’...
for Output in $(ls) do cat "$Output" done # Bash can also accept patterns, like this to `cat` # all the Markdown files in current directory for Output in ./*.markdown do cat "$Output" done # while loop: while [ true ] do echo "loop body here..." break done # => loop ...
Bash OR Operator in While Loop Expression In this example, we shall use Bash OR boolean logical operator inwhileexpression. Bash Script File </> Copy #!/bin/bash a=1 b=1 a_max=7 b_max=5 # and opertor used to form a compund expression ...
In order to get to the inner IF statement, the conditions for the outer IF statement must be met first (the first argument for the script must be between 3 and 7). As you can see combining variables, arguments, conditional expressions, and IF statements allow you to write more powerful ...
Shell脚本中主要有三种类型的循环:for、while和until。for循环遍历一系列项目或值,while循环在条件为真时持续执行,until循环在条件为假时才执行。 for i in {INITIAL_VALUE..TERMINATING_VALUE} do # 这里是代码 done 切换到全屏 退出全屏 vim forloop.sh # 这是用于编辑名为forloop.sh的Shell脚本的Vim命令 ...