Grepper
Small usefull command line program called grepper which is a usefull to complement POSIX grep.
The idea is that you have a file that can be 'whatever' delimited and then you want to extract entire rows, but you only want to do the search in specific columns.
- You supply a file containing all the keys that will be searched for in the datafile. The program will only do a single pass of the datafile.
- You specify which column to use for the search.
The program supports the following options which should make it somewhat similar to grep
- -i don't care about cases (capital letter vs small letter)
- -w seach for whole words
- -v do complement