Awk is an powerful text processing language that allows you to manipulate files containing columns of data and strings. Awk is extremely useful, both for general operation of Unix commands, and for data transformation.
Introduced in Recital 10 is the PIPETOSTR() function (as well as backticks `` inside strings) which can be used in conjunction with awk to transform recital data.
The following links provide good tutorials on awk: