sed & awk

About “sed & awk”

sed & awk describes two text processing programs central to the UNIX programming environment: sed, a stream editor used for editing text streams that may be too large for traditional file editing or generated dynamically, and awk, a data-driven programming language designed for processing structured data. The book details the functionality of both programs, including sed's substitution operations and awk's features such as automatic file handling, record and field separation, and support for extended regular expressions and associative arrays, while covering POSIX-standardized additions and multiple implementations of awk and sed.