Noob trying to improve Post: 302989611

Sponsored Content

Operating Systems OS X (Apple) Noob trying to improve Post 302989611 by Ardzii on Monday 16th of January 2017 07:26:52 AM

01-16-2017

Registered User

Hey again guys!

Thanks so much for your time and precisions!

Great material right there (especially for a beginner!).

@Bakunin: Your comments were heard! Hahahaha! Next version of the script I'll post will, hopefully, be well organized (if not correct me! Smilie

).

@MadeinGermany: The difference between the 2 is clear! Thanks a lot for that.

I'd like to come back to an earlier comment from Bakunin though:

Quote:

As a rule of thumb: grep/sed/awk | grep/sed/awk is always wrong because it can be done in the respective tool chosen.

I've been working on grep exclusively lately to try to find the correct syntax to extract the info right away but I can't seem to find a way (other than using a SED) to extract a specific portion of a line Smilie

.
Take as an example, your correction of the link extraction:

Quote:

You can do all in sed without an additional egrep:

Code:
link=$( curl "your-link-here" |\ sed -n '/href.*view more/ s/.*href="$[^"]*$.*/\1/p' \ )

Could you have done that with a grep instead of a sed? I'm trying to determine the limitation of each of these 3 commands Smilie

(don't worry, you don't have to explain that to me here, I'll figure it out on my own!

).

Thanks as usual!

Best!

Ardzii

View Public Profile for Ardzii

Find all posts by Ardzii

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Can I improve this script ???

Hi all, Still a newbie and learning as I go ... as you do :) Have created this script to report on disc usage and I've just included the ChkSpace function this morning. It's the first time I've read a file (line-by-bloody-line) and would like to know if I can improve this script ? FYI - I...

2. UNIX for Advanced & Expert Users

improve performance by using ls better than find

Hi , i'm searching for files over many Aix servers with rsh command using this request : find /dir1 -name '*.' -exec ls {} \; and then count them with "wc" but i would improve this search because it's too long and replace directly find with ls command but "ls *. " doesn't work. and...

3. Shell Programming and Scripting

improve this?

Wrote this script to find the date x days before or after today. Is there any way that this script can be speeded up or otherwise improved? #!/usr/bin/sh check_done() { if then daysofmth=31 elif then if ...

4. UNIX for Dummies Questions & Answers

Improve Performance

hi someone tell me which ways i can improve disk I/O and system process performance.kindly refer some commands so i can do it on my test machine.thanks, Mazhar

5. Shell Programming and Scripting

Any way to improve performance of this script

I have a data file of 2 gig I need to do all these, but its taking hours, any where i can improve performance, thanks a lot #!/usr/bin/ksh echo TIMESTAMP="$(date +'_%y-%m-%d.%H-%M-%S')" function showHelp { cat << EOF >&2 syntax extreme.sh FILENAME Specify filename to parse EOF...

6. IP Networking

How to improve throughput?

I have a 10Gbps network link connecting two machines A and B. I want to transfer 20GB data from A to B using TCP. With default setting, I can use 50% bandwidth. How to improve the throughput? Is there any way to make throughput as close to 10Gbps as possible? thanks~ :)

7. Shell Programming and Scripting

Want to improve the performance of script

Hi All, I have written a script as follows which is taking lot of time in executing/searching only 3500 records taken as input from one file in log file of 12 GB Approximately. Working of script is read the csv file as an input having 2 arguments which are transaction_id,mobile_number and search...

8. AIX

improve sulog

I just wrote a very small script that improves readability on system sulog. The problem with all sulog is there is lack of clarity whether the info you are looking at is the most current. So if you just need a simple soution instead of going thru the trouble of writing a script that rotate logs and...

9. Shell Programming and Scripting

How to improve an script?

Gents. I have 2 different scripts for the same purpose: raw2csv_1 Script raw2csv_1 finish the process in less that 1 minute raw2csv_2 Script raw2csv_2 finish the process in more that 6 minutes. Can you please check if there is any option to improve the raw2csv_2. To finish the job...

10. Shell Programming and Scripting

Improve script

Gents, Is there the possibility to improve this script to be able to have same output information. I did this script, but I believe there is a very short code to get same output here my script awk -F, '{if($10>0 && $10<=15) print $6}' tmp1 | sort -k1n | awk '{a++} END { for (n in a )...

LEARN ABOUT DEBIAN

shevek_regexp

shevek::regexp(3)					     Library Functions Manual						 shevek::regexp(3)

NAME

       shevek::regexp -

       Use regular expressions.

SYNOPSIS

       #include <regexp.hh>

   Public Member Functions
       regexp (std::string const &pattern=std::string(), bool case_sensitive=false)
	   Create a new object, and optionally fill it with a pattern.
       regexp & operator= (std::string const &pattern)
	   Set a pattern, removing the previous one.
       regexp (regexp const &that)
	   Copy a regexp.
       regexp & operator= (regexp const &that)
	   Copy a regexp.
       void case_sensitive (bool value=true)
	   Set whether the evaluation should be case sensitive.
       ~regexp ()
	   Destructor, this cleans up internal structures.
       bool operator() (std::string const &data)
	   Check whether the pattern matches a string, and fill internal match structures if it does.
       std::string operator[] (unsigned idx) const
	   Retrieve the value of a subexpression from the last matched string.
       bool valid (unsigned idx) const
	   Test whether a subexpression was filled by the last matching string.
       unsigned size () const
	   Get the number of subexpression.
       std::string transform (std::string const &data) const
	   Transform a string with -codes according to the last matching string.
       std::string const & pattern () const
	   Get the current pattern.

Detailed Description
       Use regular expressions.

Member Function Documentation
   std::string shevek::regexp::operator[] (unsignedidx) const
       Retrieve the value of a subexpression from the last matched string. This throws an exception if the subexpression is not valid.

Author
       Generated automatically by Doxygen for libshevek from the source code.

libshevek							  Fri May 11 2012						 shevek::regexp(3)