When writing Bash scripts you will often need to compare two strings to check if they are equal or not. Two strings are equal when they have the same length and contain the same sequence of characters. This tutorial describes how to compare strings in Bash....
/bin/bashread-p"Enter first string: "VAR1read-p"Enter second string: "VAR2if[["$VAR1"=="$VAR2"]];thenecho"Strings are equal."elseecho"Strings are not equal."fi 您还可以使用逻辑和&&和或||比较字符串: [["string1"=="string2"]]&&echo"Equal"||echo"Not equal" 如果你需要检查字符...
Here is how you compare strings in Bash. if [ "$string1" == "$string2" ] You can also use a string directly instead of using a variable. if [ "$string1" == "This is my string" ] Let me show it to you with proper examples. ...
我们可以使用各种比较运算符比较字符串,并使用正则表达式检查字符串是否包含子字符串。 Bash 中的字符串比较 字符串比较是指检查给定的字符串是否相同。如果两个或多个字符串长度相同,并且包含相同的字符序列,那么它们就是相同的。 我们使用各种字符串比较运算符,根据条件返回真或假。一些被广泛使用的字符串比较运算符...
How to compare strings in Bash https://stackoverflow.com/questions/2237080/how-to-compare-strings-in-bash unix-quick-guide https://www.tutorialspoint.com/unix/unix-quick-guide.htm - cd命令技巧 cd 直接去home cd - 上一个命令 cd + pushd, popd合用...
We can use = (equal to) operator in Bash script to compare two strings. We also use==operator to compare strings. ==Is a synonym for the = operator for string comparisons. For example, consider a Bash script First.sh with the following contents. ...
String comparison includes comparing the value of two strings - their length or sequence of characters. Compare strings when checking for certain conditions before proceeding to the next step of the script. This tutorial will teach you how to compare strings using a Bash script. ...
For programming purposes, most times, you will need to compare the strings using a defined string value. The example below shows how a string’s data taken from a user is employed to compare the inequality of the data using a fixed value. The output will print “No record found” if the...
but you can also constructconditional expressionswhich are logical statements that are either equivalent totrueorfalse. Conditional expressions either compare two values, or they ask a question about one value. Conditional expressions are always between double brackets ([[ ]]), and they either uselog...
https://stackoverflow.com/questions/4277665/how-do-i-compare-two-string-variables-in-an-if-statement-in-bash http://www.masteringunixshell.net/qa36/bash-how-to-add-to-array.html https://www.cyberciti.biz/faq/linux-unix-bash-for-loop-one-line-command/ ...