The awk command can make it easy to remove duplicate characters from a string even when those characters aren’t sequential, especially when the process is turned into a script. First, the awk command ...

The awk utility is still one of the most useful tools for separating out columns within text, thus allowing them to be used in other commands. And GNU awk (gawk) with its wide range of new features ...

I never used awk except when reading other people's scripts, because perl could do awk stuff almost as easily, while also allowing you to expand seamlessly into more complicated tasks that would be ...

A key point to these tools (from a practical point ) is that they are very memory efficient and allow work on just a "line".