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Hi Don,



The current script would not match all those and wouldn't have since I moved to an Awk only solution. I posted about this in post num 17, see paragraph "The code has failed to handle...

...and just because this might be of interest:





I've had a look into the question I've placed in bold above...

I created a dataset of 5 million numbers each with a random number of...

Hi Don,


Obviously absolutely no apology needed whatsoever. I hope you had a great time with your grandkids.



Yes. Thanks for the excellent explaination, now I get it.

Chubler_XL: My...

NOTE: Scrutinizer - see bottom of this post.

Hi again and thanks Chubler_XL,



That's exactly what I thought/think too. BUT strange things are going on, read on...

What I don't understand...

Hi Don,

Thanks for such a comprehensive reply. Some points for me to answer and some questions to ask.

On the use of local variables it simply didn't occur to me that this was not standardized....

Hi Chubler_XL and Don,

Thanks again guys, your support is appreciated.



Yes, my apologies. I misread it as having the double quotes escaped. Oops. That's now back in the code.

I've also...

Thanks very much Chubler_XL. That's an excellent way to do it and what I've used with some changes.

Your IP regex code IP_RE="[0-9]+\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]+" is not Posix compatible....

[EDIT: Forget the below - I'll re-write without using -o, may as well get it right. I wrote the below before noticing Don's latest reply, having spotted the possible problem with sed -E myself. I...

Thanks. That is an ever so slightly more elegant solution and the one which I shall in fact use. Don will get over it eventually, I'm sure it's nothing that some intensive therapy won't cure. :p
...

Thanks Don, that is a perfect solution. [No, they will never be on the same line.]

I should have been looking at the grep man page instead of scratching my head trying to work out a regex...

Hi,

I've got a regex match to perform in a Bash script and can't quite get it right.

Basically I want to match all IP address like sequences in a file which may or may not contain an IP address...

Thanks again Don, got it. I think I'll use (pattern) in future cos it looks funkier. :cool:

I haven't used vi since my Solaris 2.x days at university but never fully mastered all the keys.
...

Don,

What a thoroughly helpful and informative post, thank you so much. It has helped me to understand what's going on and to resolve my issue with ease. You obviously went to great effort to help...

That is a very good point. :) I didn't think about that as the script does not take a filename as input. Oops.

I suppose that after the getopts loop has finished I could loop through the args...

I'm using getopts to process command line args in a Bash script. The code looks like this:

while getopts ":cfmvhs:t:" option; do

case $option in

c) operationMode="CHECK"
...

Thanks again.

I'll take your advice and use that instead in the future. I've used '**' as a field separator for (my system's) awk in the past so I knew it worked. It's clearly a bad habit which I...

Thanks Scrutinizer, that works.

I thought that anything before the awk {} was before the first line. Oops, so obvious once you know. :b:

To anyone who's interested, this also works:

$ find ....

Today I needed to take a look through a load of large backup files, so I wrote the following line to find them, order them by size, and print the file sizes in GB along with the filename. What...

That's it !! All is now working. Well done, it never occurred to me that LANG would have an impact on grep.

Thanks so much.

Good idea, [[:print:]] works too.

The problem now is that all my tests have involved testing from a terminal, running the script from crontab stops the regexes from working (though everything else...

Thanks for the suggestion but using -F with grep did not work.

However I have diagnosed the problem...

The web page in question (url below) is being searched for the string "Currently out of...

I wrote a Bash script which checks to see if a text string exists on a web page and then sends me an email if it does (or does not e.g. "Out of stock"). I run it from my crontab, it's quite handy...

Ok thanks again for the help.

Anyone else got further info. on this?

Cheers all.

Thanks Corona.


Ok, got it.


In the absence of any other ways of doing it (anyone?), which would you think was most likely to work with different flavours of Unix/Linux and Gnome v.2 or 3? Or...

Hi,

I'm writing a Bash script for wallpaper clocks which works fine on the command line but needs to be run every minute from a crontab entry so the time gets changed on the wallpaper (the...