另请参见:Bash String Comparison: Find Out IF a Variable Contains a Substring
另一种 POSIX 就绪POSIX ready的方案如下: u="this is a test" set -- $u echo "$1" echo "$2" echo "$3" echo "$4" 输出为: this is a test 下面是一段 bash 代码,用来从 Cloudflare cache 中去除带主页的 url。 #!/bin/bash ### ## Author - Vivek Gite {https://www.cyberciti.biz...
Checking if a string contains a substring is one of the most basic and frequently used operations in Bash scripting. After reading this tutorial, you should have a good understanding of how to test whether a string includes another string. You can also use other commands like awk or sed for...
redis a possible input too. So, I added another condition.||indicates “or”. If you enterRed, it is a substring. But even thoughredis not one, I had to add it. Finding substring in bash using grep command Here's another way for finding substring in a string in bash.Use the grep ...
[1] 用于在扩展后进行单词分割,并用内建的 read 命令将行分割为词。...它的语法为:想了解更多请阅读 bash 的 man 页:另请参见:Bash String Comparison: Find Out IF a Variable Contains a Substring 1.6K90 Shell 参数扩展及各类括号在 Shell 编程中的应用 今天看有人总结了 shell 下的参数扩展,但不是...
940 PHP - How to check if string contains substring PHP Checking if a string contains a substring in Bash / Published in: Bash Expand | Embed | Plain Text string='My string'; if [[ $string == *My* ]] then echo "It's there!"; fiURL: http://stackoverflow.com/questions/229551/...
if echo "$VAR" | grep -q txt # if [[ $VAR = *txt* ]] then echo "$VAR contains the substring sequence \"txt\"" fi 1. 2. 3. 4. echo命令可以与命令替换组合起来, 这样可以用来设置一个变量. a=`echo "HELLO" | tr A-Z a-z` 小心echo `command`将会删除任何由command所产生的换行...
echo $subscriptionId # Returns the contents of the variable. az account list --query "[? contains(name, 'Test')].id" -o tsv # Returns the subscription id of a non-default subscription containing the substring 'Test' subscriptionId="$(az account list --query "[? contains(name, 'Test'...
"$BASH_ENV"; fi but the value of the PATH variable is not used to search for the file name. If bash is invoked with the name sh, it tries to mimic the startup behavior of historical versions of sh as closely as possible, while conforming to the POSIX standard as well. When invoked...
1 : This is a comment thar generates an error,(if [ $x -eq 3] ). ":"还用来在/etc/passwd和$PATH变量中用来做分隔符. bash$ echo $PATH /usr/local/bin:/bin:/usr/X11R6/bin:/sbin:/usr/sbin:/usr/games! 取反操作符,将反转"退出状态"结果,(见Example 6-2).也会反转test操作符的意义...