How to get the last n characters of a string in Bash
In this post we will give you information about How to get the last n characters of a string in Bash. Hear we will give you detail about How to get the last n characters of a string in BashAnd how to use it also give you demo for it if it is necessary.
we are going to learn about how to get the last n characters of a string in Bash.
Consider, we have the following string.
country="Portugal"
Now, we want to get the last 3 characters gal from the above string.
Getting the last n characters
To access the last n characters of a string, we can use the parameter expansion syntax ${string: -n} in the Bash shell.
-n is the number of characters we need to extract from the end of a string.
Here is an example:
country="Portugal"lastThree=${country: -3}echo $lastThree
Output:
"gal"
Note: In the above syntax space is required after the colon (:); otherwise it doesn’t work.
Similarly, you can also get the last 4 characters of a string like this:
country="Portugal"lastFour=${country: -4}echo $lastFour # "ugal"
Hope this code and post will helped you for implement How to get the last 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
How to revoke 'git add' before 'git commit' ?
In this post we will give you information about How to revoke 'git add' before 'git commit' ?. Hear we will give you detail about How to revoke 'git add' before 'git commit' ?And how to use it also give you demo for it if it is necessary.
Sometimes you need to undo your git file before you git comment command. Because you made a some misteck or wrong code and you did git add using "git add ." command then you think how to undo your code before git commit command. But you can do that using git reset command, if you need to undo all file Or you may need to undo just one then you can do using git reset command, you can see bellow command.
Example:
// For Spesific filegit reset
// For all files
git reset
Hope this code and post will helped you for implement How to revoke 'git add' before 'git commit' ?. 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