When the bash file was executed within the terminal, it displayed the other part of the code because the condition wasn’t satisfied. Save this code with “Ctrl+S” while quit via the “Ctrl+X” shortcut method. So, you can see that we have used “!=” instead of “-new” here in the code below. When comparing text types, the -ne operator couldn’t be cast-off alternatively, the “!=” operator must always be castoff. Otherwise, it will execute the other part of a code and end the “if-else” statement. If the condition satisfies and both the values are not matched, it will run the first echo statement. Throughout this instance, we’ll see whether the provided text bash variable “val” isn’t identical to the specified string “Aqsa”. We’ll make a string element $val and compare it to the string “Aqsa”. Within the “if” statement, we have declared a condition. After that, we have declared a variable “val” having a string value “Aqsa”. So, we have added the bash extension first. Now write the code shown in the image below within your bash file. You will see that the newly created bash file will be opened via GNU editor. So, we have made a bash file named “test.sh” with the built-in “touch” query as below. The terminal app has been launched successfully we will create a new bash file to save the bash code within it. Alternatively, you can explore it from the Activity menu bar and search it using the search bar. After the successful login, launch the console application named “terminal” at your desktop by “Ctrl+Alt+T”. In our case, we have been working on Ubuntu 20.04. For this purpose, let’s login from the Linux operating system first. ![]() Let’s see how not equal sign works in bash. The not equal expression is often used in conjunction only with if or elif expressions to check for equality and run instructions. The not equal operation yields a boolean result of True or False. In addition, for the not equal expression to operate, it must be enclosed by brackets ]. The exclamation point, i.e., “!=” is also commonly used in certain computer languages to indicate that something is not equal. The not equal function in Ubuntu bash is denoted by the symbol “-ne,” which would be the initial character of “not equal.” Also included is the “!=” operator that is used to indicate the not equal condition. ![]() The variables are named as $myname and $yourname.The not equal “-ne” controller inside the Linux Bash programming language compares two possible values when they’re not equivalent. name="ismail"Īlternatively, we can check two string variables like below. The -ne operator can not be used with the string types, instead of the != should be used for string comparison. ![]() ![]() We will create the string variable $name and check with the string “ismail”. In this example, we will check if the specified string bash variable is not equal to the specified string. Generally, this boolean value is used with the if or elif statements. The not equal comparison operator returns a boolean value which can be True or False. Generally the VALUE2 is a value which can be string, number etc. VALUE2 is the second value we will compare with the VALUE1.VALUE1 is the first value we will compare with the VALUE2.The not equal operator is surrounded with the brackets ] in order to work. The “ !=” is also popularly used in other programming languages for not equal. Also the “!=” is used to express not equal operator. Linux bash not equal operator is expressed with the “-ne” which is the first letter of “not equal”. The not equal operator generally used with the if or elif statements to check not equal and execute some commands. Linux Bash scripting language provides the not equal “ -ne” operator in order to compare two values if they are not equal.
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