Question

Source or learning Perl, awk and sed

Asked by: mfarid1

1)I would like, and very much appreciate, some recommendations on online resources for learning awk, sed and Perl.

2)I would appreciate any recommendations on which one is better, awk or sed.

Thanks.

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Asked On
2007-11-10 at 21:59:23ID22952723
Tags

awk

,

sed

,

learning

,

perl

Topics

Linux Programming

,

Unix Systems Programming

Participating Experts
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Answers

 

by: ozoPosted on 2007-11-10 at 22:10:39ID: 20258232

perldoc -q book
man awk
man sed
awk can do more than sed
sed can be quicker for simple jobs, but when your task doesn't quite fit the paradigm, it can be harder to coerce it into sed comnmands

 

by: ozoPosted on 2007-11-10 at 22:17:19ID: 20258244

 

by: mfarid1Posted on 2007-11-11 at 00:46:21ID: 20258415

Thanks ozo but you referred me to a book. I was hoping get some online resources. Are there any for Perl and awk?

 

by: ghostdog74Posted on 2007-11-11 at 02:52:17ID: 20258583

You should learn how to google effectively.
Perl:
1) http://perldoc.perl.org/ <--great resource
2) http://www.cs.cf.ac.uk/Dave/PERL/
3) http://docs.rinet.ru/Perl5_examples/

Awk/Sed:
1) http://www.unix.org.ua/orelly/unix/sedawk/index.htm <--- AWK and SED
2) http://www.gnu.org/software/gawk/manual/gawk.html <-- GNU AWK

IMO, awk does the job of grep/sed/cut/, and so i would recommend learning awk and get proficient with it.

 

by: PCableGuyPosted on 2007-11-11 at 08:08:06ID: 20259360

Below are some online resources. As for which is better, it probably depends on what you need to accomplish. For instance, my only experience with awk and sed is homework as a student. One of our homework assignments had both an awk and sed solution. Both solutions worked, but the sed solution was one line of code, awk had several lines of code.

My first impressions of them are similar to the opinion of this hyperlink: http://www.faqs.org/docs/abs/HTML/sedawk.html  
sed is is text file editor (non-interactive)
awk is a field-oriented pattern processing language

awk:
http://www.oracle.com/technology/pub/articles/dulaney_awk.html

sed:
http://www.oracle.com/technology/pub/articles/dulaney_sed.html

One liners for awk:
http://www.student.northpark.edu/pemente/awk/awk1line.txt


Good luck

 

by: duncan_roePosted on 2007-11-11 at 13:01:34ID: 20260545

The master perl site is CPAN (comprehensive perl archive network) http://cpan.org
From there, you quickly get to http://perldoc.perl.org/index-tutorials.html as mentioned earlier.

The linux awk man page is a comprehensive document telling you how to write awk scripts - rather unusual for a man page

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