if [ "$string1" != "Not MyString" ] then echo "Not Equal Strings" else echo "Stringis equal" fi 在Bash 中检测字符串是否是空值或者空串 和那些个与 C++ 类似的语言不同,在 Bash 脚本中还可以用一个命令来检测一个字符串是否是空值(null)或者空串(empty""): if [ -z "$VAR" ] -z实际上...
Here is how you compare strings in Bash. if [ "$string1" == "$string2" ] You can also use a string directly instead of using a variable. if [ "$string1" == "This is my string" ] Let me show it to you with proper examples. Example 1: Check if two strings are equal If yo...
/bin/bashread-p"Enter first string: "VAR1read-p"Enter second string: "VAR2if[["$VAR1"=="$VAR2"]];thenecho"Strings are equal."elseecho"Strings are not equal."fi 您还可以使用逻辑和&&和或||比较字符串: [["string1"=="string2"]]&&echo"Equal"||echo"Not equal" 如果你需要检查字符...
String.compareTo int compareTo(String anotherString) 按字典顺序比较两个字符串。如果返回0,表示相等;<0表示小于;>0 表示大于。 int compareToIgnoreCase(String str) 不考虑大小写,按字典顺序比较两个字符串。 In Bash 判断是否大于(字典顺序) 格式1:[ "$S1" \> "$S2" ] 判断S1是否大于S2,注意转义字符...
set a condition to check if the string value of variable $val is not equal to "Aqsa". If this condition is met, the first echo statement will be executed. Otherwise, the other part of the code will be executed, and the "if-else" statement will end. Note that when comparing text typ...
Not only integers; you can alsocompare strings in bashwith the test command. Let me share some examples. String comparison with test Command Here are some string comparison examples using the test command. Check if the string is not empty ...
String1 and String2 are equal.String1 and String2 are equal.String1 and String3 are not equal. 这里,如果我们先用=运算符比较String1和String2。由于String1和String2都具有相同的长度,具有相同的字符序列,比较运算符返回true,因此我们得到String1 and String2 are equal.作为程序中第一个if-else块的输出...
Bash string comparison It is advisable always to check and compare if two strings are equal in a Bash script; this is quite important for different reasons. If two strings are equal in a Bash script, it implies that both strings have the same length and character sequence. The “if” stat...
Use the=or==operators when checking if strings are equal. Follow the steps below tocreate a Bash scriptand compare two strings: Check Predefined Strings 1. Open the terminal (Ctrl+Alt+T) and create a new Bash script. We will use the vi/vim text editor: ...
/bin/BashS1="Hello World"S2="Hello World"if["$S1"="$S2"]thenecho"Equal"elseecho"Not Equal"fi The following script contains two strings,S1andS2have the same value. Theifcondition compare the string using=operator; however, we can also useif [ "$S1" == "$S2" ]statement to compare...