New posts in Text Processing

Delete all but the last comment line for each comment block

Compare two files on specific columns only line by line

How to extract multiple values from a file in a single pass?

A set of paragraphs of 4 lines to manage with AWK

How to Compare two files and then append line that is not a partial match?

How to find non repetitive letter from a given string

How to remove unique strings from a textfile?

sed with next line (`+N` option) and frequency (`~N`) together

Replace all characters except the first four characters

awk: split file by column name and add header row to each file