I started this blog a year ago and then I got these huge ideas about giant 10 page articles. Anyway, everything became way too big and I never got around to posting because I never had time to finish what I was writing. Now I think its time for a different approach. I will write smaller posts that are more to the point.
More to come...Friday, September 19, 2008
Monday, August 6, 2007
Chomp, Hashes, and Regexes
I am still working through my perl book. I was having trouble working through the exercises and I thought it was because I didn't understand how hashes work. However it was actually because I forgot to use chomp when saving standard input to a variable. I am embarassed to say that it set me back a few hours but I won't forget to check if I used chomp any time soon.
I am working through the subroutine chapter. Perl subroutines are pretty much just like VB subroutines as far as I remember. I am excited because the next chapter is regex. regex is why I chose to learn perl. I read somewhere that perl came from sed. My first chance to use regex was when the dev team needed a wildcard email address scheme. While I didn't create the alias file to translate the dummy email address. I implimented it. It isn't as hard as it looks. When you get past the escape character (\) regular expressions stop looking cryptic.
I am working through the subroutine chapter. Perl subroutines are pretty much just like VB subroutines as far as I remember. I am excited because the next chapter is regex. regex is why I chose to learn perl. I read somewhere that perl came from sed. My first chance to use regex was when the dev team needed a wildcard email address scheme. While I didn't create the alias file to translate the dummy email address. I implimented it. It isn't as hard as it looks. When you get past the escape character (\) regular expressions stop looking cryptic.
Powered by ScribeFire.
Friday, August 3, 2007
RHCE, Perl and stuff
Lately I have been focusing on the Red Hat exam. I am currently setting up a network install at home. However, I am working through an older book. I'm not sure how big the difference is between Red Hat Enterprise Linux 3 and 4 (The book is on 3). I am pretty sure the basic tools are the same. Perhaps I can convince my bosses to pay for my training.
Today I found the search and replace string for vi. %s/stringtofind/replacementstring/g. I googled it. That and its variations should help me when it am working through config files in the future.
While I had been scripting in bash, I picked up an online class that fell through the cracks before. I finished the class, but it didn't exactly give me the interactive exposure to the language that I need to learn it. Anyway, I picked up a book called “Beginning Perl” by James Lee. I would have chosen the O'reilly book but “Beginning Perl” seemed to be more hands on.
It includes chapters on both working with files and data, and working with the operating system. I feel like I will learn more with this this way. I just finished the section on arrays and am moving into hashes and regular expressions. Because my plate is full. I will probably spend less time on MythTV but I will be working on scripts more as there are plenty of things that need to be automated at the office.
Today I found the search and replace string for vi. %s/stringtofind/replacementstring/g. I googled it. That and its variations should help me when it am working through config files in the future.
While I had been scripting in bash, I picked up an online class that fell through the cracks before. I finished the class, but it didn't exactly give me the interactive exposure to the language that I need to learn it. Anyway, I picked up a book called “Beginning Perl” by James Lee. I would have chosen the O'reilly book but “Beginning Perl” seemed to be more hands on.
It includes chapters on both working with files and data, and working with the operating system. I feel like I will learn more with this this way. I just finished the section on arrays and am moving into hashes and regular expressions. Because my plate is full. I will probably spend less time on MythTV but I will be working on scripts more as there are plenty of things that need to be automated at the office.
Powered by ScribeFire.
Subscribe to:
Posts (Atom)
Posts
