Overview

In case the failure of the command should not stop the execution of the program,  then the below way can be used. 

command && echo "Success" || echo "Failure"

• If the command fails then the output will be “Success”.

• If the command above passed then the output will be “Failure”

Example

• Success Case

In the example below the command is ‘pwd’ which is a valid command

export command=pwd
$command && echo "Success" || echo "Failure"

Output

{It will print the current directory}
Success

• Failure Case

In the example below the command is ‘pwdd’ which is an invalid command

export command=pwdd
$command && echo "Success" || echo "Failure"

Output

-bash: pwdd: command not found
Failure

It prints Failure as pwdd is an invalid command