How to get the first n characters of a string in Bash
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we are going to learn about how to get the first n characters of a string in Bash.
Consider, we have the following string.
country="portugal"
Now, we want to get the first 3 characters por from the above string.
Getting the first n characters
To access the first n characters of a string, we can use the (substring) parameter expansion syntax ${str:position:length} in the Bash shell.
position: The starting position of a string extraction.
length: The number of characters we need to extract from a string.
Here is an example that gets the first 3 characters from the following string:
country="portugal"firstThree=${country:0:3}echo $firstThreeOutput:
"por"
This above syntax can also be written like this:
country="portugal"firstFour=${country::3}echo $firstThree # "por"Similarly, you can also get the first 4 characters of a string like this:
country="portugal"firstFour=${country::4}echo $firstFour # "port"Hope this code and post will helped you for implement How to get the first n characters of a string in Bash. if you need any help or any feedback give it in comment section or you have good idea about this post you can give it comment section. Your comment will help us for help you more and improve us. we will give you this type of more interesting post in featured also so, For more interesting post and code Keep reading our blogs