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Thanks Chubler,

I'll try this out and see how it works, thanks. Is sed included by default in Ubuntu? We have a major requirement that things not be too difficult to maintain, and we don't want to...

Hi all,

Is Perl included by default in Ubuntu? I'm trying to write a program using as few languages as possible, and since I'm using a few Perl one-liners to do non-greedy matching, it's...

Thanks Scrutinizer,

I managed to find a solution in Perl:


perl -pe "s/(.*?<GrayLevel>){1}(.*?)<\/GrayLevel>.*/\2/"


That being said, I know absolutely nothing about awk. Would you mind...

Hi all,

I'm trying to create a sed command to get the Nth instance of an XML tag in a string, but thus far I can only ever seem to get the last one.

Given an XML string:
...

Thank you neutronscott,

I didn't know that about pid, now I think I know how to fix this. :)

Thanks neutronscott,

I can only get a pid when MyProg is in the background, that's the weird thing. If the process is in the foreground, the process id is empty. I wrote MyProg myself, and it...

Hi all,

I have a small graphical application whose only purpose is to pop up certain types of messages. Currently, I'm using it in a Bash script like this:


./MyProg "this is my message"...

As I said earlier, it does make a difference. I'm required to make the screen black, but not turn the monitor off. If I'm using the term "idle" incorrectly, I apologize. But, what I'm getting from...

100% right Jim, that's exactly what I need to do. Basically, we're rewriting a Windows application to run on Linux, so I'm supposed to emulate that functionality of being able to go idle and then...

I don't think this is quite what I'm looking for. I want the screen to show a black screen, but I don't want the monitor to turn off. From what I understand after doing some research, the command you...

OK. It's an Ubuntu system, 13.04 I believe. I don't know the monitor specifications, is that necessary?

Hi all,

Is there a way, on the command line, to show a black screen WITHOUT turning off the monitor? Also, is there a way to make the computer show the last screen before the black screen as soon...

Thank you both, I didn't know that bash runs in subshells. I learn something new every day, that's the mark of a good Friday. :) Everything's working fine now.

Thanks clx,

That's almost got it -- it seems to work outside of a loop, but not inside a loop. If I have a setup like this:


#!/bin/bash
myVar=0
perl -ne 'print if s|blah||' test.xml | while...

Hi all,

I'm using Bash 4.3.8 on an Ubuntu system, and no matter what I try, incrementing a counter won't work. The simplest example would be something like this:


#!/bin/bash
myVar=0...

Hi all,

I have a web site that I'm serving on an Apache server, and it has a number of different folders, but I only want the user to be able to access certain ones -- the majority of them I don't...

Hi all,
I'm running SVN on Ubuntu 12.04, and I have to connect it to an online repository accessed by HTTPS. I can check out files from the repository just fine with the command:

svn checkout...

Argh, I meant a compiling macro! *facepalm* Can I do it with a compiling macro?

Hi everybody,

I have a Makefile where a single suffix rule is defined:


.SUFFIXES: .cpp
.cpp.o:
${CXX} ${CXXFLAGS} -c -o $@ $<
And I'd like to create another where an additional...

Thank you edidataguy, that works perfectly! :)

Hi everybody,

I have a Makefile where I need to use an environment variable that I set, MYBUILDPATH. The variable can be different depending on the computer, but it always ends with...