Re: Regular Expression Search and parse?

["markw-4" <user=5@nabble.blu.org>]

 Well, I think we have discovered a need for a "new" UNIX command line 
utility. 

How about "printgrep," or if properly shortened to unix shorthand "prgrp." 

Usage: prgrp [options] regex format file1 file2 ... filen 

regex: A  POSIX.2 regex(7) regular expression 
format: A string with which to format the output of regex. 
options: 
-i ignore case 
-N default parameter, where N is between 1 and 9 

format string looks like this: 

"First parameter: $1, third parameter $3, second parameter $2" 

What do you think? Usefull? 


> Well... I mean, by code, no thats just confusing. You will have to program 
> something, so pick your language and run with it. I would say for "ease" 
> of 
> use, sed/awk as they can be command line driven, grep I believe just is or 
> was a specific command set in ed, now perhaps sed, that I may be mistaken 
> on.... but in all ways you will have to program something, even a bash 
> script, if you want it to run more then once. Honestly if you haven't done 
> sed/awk programing before, and know a bit of perl... do it in perl, if you 
> know a bit of python, do it in python, if you know sed or awk, use sed or 
> awk... but in all forms programing will have to take place. ~Ben 
> 
> On Jan 18, 2008 8:51 AM, Grant M. <[hidden email]> wrote: 
> 
>> Mark Woodward wrote: 
>> > So, if I have file with a lot of lines that look like this: 
>> > 
>> > Title: The Long and Winding Road [ISBN:123456] 
>> > Descr: A boring book about boring roads 
>> > Author: A dull cab driver 
>> 
>> How about this: 
>> # cat books.txt | grep '^Title\: ' | sed 's/.*\[//' | sed 's/\]//' 
>> 
>> redirect that to an output file using " > isbns.txt" and you have your 
>> ISBN numbers. If you just want the numbers, and not the "ISBN: ", then 
>> change the first call to sed like this: sed 's/.*\[ISBN\://' 
>> 
>> 
>> You could probably combine the last 2 seds, but this should do what you 
>> asked. You could also make it some sort of alias with $1, $2, and $3 
>> inputs, and do something like: 
>> cat file | myreplacer '^Title\: ' 's/.*\[//' 's/\]//' > outfile.txt 
>> 
>> Grant M. 
>> -- 
>> Grant Mongardi 
>> Senior Systems Engineer 
>> NAPC 
>> 
>> [hidden email] 
>> http://www.napc.com/
>> 781.894.3114 phone 
>> 781.894.3997 fax 
>> 
>> NAPC | technology matters 
>> 
>> 
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