strip

Java - strip unwanted characters from a string

Here's a quick line of Java code that takes a given input string, strips all the characters from that string other than lowercase and uppercase letters, and returns whatever is left:

By Alvin Alexander on February 19, 2013

PHP - Strip unwanted characters from a string

PHP string strip FAQ: How can I strip unwanted characters from a PHP string? (Or, How can I delete unwanted characters from a PHP string?)

Here's a quick PHP preg_replace example that takes a given input string, and strips all the characters from the string other than letters (the lowercase letters "a-z", and the uppercase letters "A-Z"):

By Alvin Alexander on January 22, 2013

A Ruby script to remove binary (garbage) characters from a text file

Problem: You have a file that should be a plain text file, but for some reason it has a bunch of non-printable binary characters (also known as garbage characters) in it, and you'd like a Ruby script that can create a clean version of the file.

Solution: I've demonstrated how to do this in another blog post by using the Unix tr command, but in case you'd like a Ruby script to clean up a file like this, I thought I'd write up a quick program and share it here.

By Alvin Alexander on August 30, 2011

Remove non-printable ASCII characters from a file with this simple Unix command

For a variety of reasons you can end up with text files on your Unix filesystem that have binary characters in them. In fact, I showed you how to do this to yourself in my blog post about the Unix script command. (There's nothing wrong with this approach; it's just a by-product of using the script command.)

By Alvin Alexander on August 8, 2011
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