The below example code will accept only Y or n or yes or no (Not case-sensitive). . bashでwhile無限ループを1行コードで書く方法 - まめぞうの技術メモ Example.sh. ADVERTISEMENT bash while loop syntax The syntax is as follows: Explanation to the above code: In the above example, there is no condition in the while loop so it always evaluates to true and body of the loop will execute continuously until we enter ctrl+c to stop the while loop. In a while loop, integer comparison inside the square brackets should be expressed using bash's built-in comparison operators . done. Bash script: While loop examples - Linux Config Bash if elif else Statement: A Comprehensive Tutorial or. In this tutorial you have learned: The structure of a while loop in Bash. while loops are useful when you need to repeatedly execute a set of instructions a certain number of times, or when you want to create an infinite loop. while : some gibberish, still just using :, is slower than true. Bash（バッシュ）にはループ文というループ処理を書ける文が複数あります。 そのループ文の1つにwhile（ホワイル）文があります。 このwhile文は繰り返し処理をしたい時に使うことが出来ます。 たとえばwhile文は↓のように書きます。 The second match would then be skipped, as there was a match that was already found. Compare this to an external command, like while /bin/true, which is literally a hundred times slower. 我有一个 bash 脚本，它是 perl 脚本的看门狗。如果不是我希望它在控制台中启动它，它会检查 perl 脚本是否正在运行。 . /bin/bash while true do echo "1. docker run bash command sleep. The logic of the while loop is very simple. The echo statement will display infinite times until we press . To create infinite loops, you can use the bash-builtin true keyword. Rather than deleting it at each place where you exit your script, you just put a trap command at the start of your script that deletes the file on exit: tempfile= /tmp . The following primary loop constructs showcase how the statement works: The for loop continues at the next iteration when combined with continue. to you. An infinite loop is nothing but a sequence of instructions which loops endlessly, either due to the loop having no terminating condition, having one that can never be met, or one that causes the loop to start over. This makes it hard to know if what you have typed here accurately represents your true situation. Share. Bash Builtin Commands. bashで無限ループ（1行コード）サンプル.
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