问bash if- not语句不按预期工作EN目标通过ILM策略防止单个索引膨胀引发异常。问题实际操作时索引没有预期策略精确执行。长时间没执行：等了好久；执行不够精准：超过设置文档数量策略；超过size大小策略。#创建ilm策略PUT _ilm/policy/datastream_policy{ "policy": { "phases": { "hot": { "actions": { "rollover":...
If-else-statement-example-bash-script 使用if-else 比较字符串 #!/bin/bash string1=Debian string2=RHEL if [ "$string1" = "$string2" ]; then echo "The strings are equal." else echo "The strings are not equal." fi 使用if-else 检查文件是否存在 #!/bin/bash file_path=/var/scripts/mi...
ENbash中的变量 <span style="display: inline !important;float: none;background-color: transparent;...
-eqequal，检测两个数是否相等，相等返回 true。[ $a -eq $b ] 返回 false。-nenot equal，检测...
/bin/bashfile_path="/path/to/your/file.txt"if[-f"$file_path"];thenecho"The file exists."elseecho"The file does not exist."fi Copy In this example, the script checks if the file exists using the-ftest. If the file exists, it prints “The file exists.” Otherwise, it prints “...
bash编程之条件判断,if语句! bash编程之条件判断:判定后续操作的前提条件是否满足。 条件判断的常用测试类型: 1整数测试:比较数值大小,然后判定是否符合条件 2字符测试:比较字符串(是否一样,字符串大小,是否为空),然后判定是否符合条件 3文件测试:判断文件是否存在,文件是否为目录,文件是什么类型...
Bash Copy In this example, the script first checks if ‘a’ is greater than ‘b’. If it’s not, it moves on to the ‘elif’ statement to check if ‘a’ is greater than ‘c’. If neither condition is met, it executes the ‘else’ statement, which in this case, prints ‘a is...
$ bash ifnot.sh Conclusion This article is all about the use of the “if-not” condition within the Bash script with the use of simple Bash examples. We have tried it using many options of Bash like “-z”, “-f”, “-ne”, -“eq”, and “<”. We have tried these options an...
编写Bash脚本的三个常用技巧 原创 常柱的blog 2021-07-25 16:11:19 147阅读 python三个条件并列 python if条件并列 2. if语句_and、or、not运算规则 """ if语句练习 if 语句 and or not 规则运算: if 多个条件: and 并列 x and y or 或者 x or y not 非 not x """ """ if语 ...
Though be careful if your shell script runs with the set -u option and your variable does not exist, then your script will fail with an error like bash: myVar: unbound variable. To work around this, you can test with a parameter expansion by using ${parameter:+word} to ensure that ...