Posted
by cdated
on Stack Overflow
See other posts from Stack Overflow
or by cdated
Published on 2010-04-23T18:31:48Z
Indexed on
2010/04/23
18:33 UTC
Read the original article
Hit count: 179
Can regular expressions be used to perform arithmetic? Such as find all numbers in a file and multiply them by a scalar value.
© Stack Overflow or respective owner
as seen on Ask Ubuntu
- Search for 'Ask Ubuntu'
I tried today to install a dvb-card on my Ubuntu 12.04 (Linux blauhai-linux 3.2.0-25-generic #40-Ubuntu SMP Wed May 23 20:30:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
). The installation failed with an error. After that, i tried to install python (it was already installed but i got this error):
linux:~$…
>>> More
as seen on Ask Ubuntu
- Search for 'Ask Ubuntu'
I installed sikuli-ide with
sudo apt-get install sikuli-ide
Everything was fine until I tried to start it from the terminal. I typed
sikuli-ide
But the only response I got was
[info] locale: en_US
The application was not started, furthermore there is no desktop file and sikuli-ide does not…
>>> More
as seen on Super User
- Search for 'Super User'
I can't import some python libraries (PIL, psycopg2) that I just installed with MacPorts. I looked through these forums, and tried to adjust my PATH variable in $HOME/.bash_profile in order to fix this but it did not work.
I added the location of PIL and psycopg2 to PATH.
I know that Terminal is…
>>> More
as seen on Stack Overflow
- Search for 'Stack Overflow'
I want to pass a chunk of Python code to Python in R with something like system('python ...'), and I'm wondering if there is an easy way to emulate the python console in this case. For example, suppose the code is "print 'hello world'", how can I get the output like this in R?
>>> print…
>>> More
as seen on Stack Overflow
- Search for 'Stack Overflow'
Hi,
I am currently struggling to call a non python program from a python script.
I have a ~1000 files that when passed through this C++ program will generate ~1000 outputs. Each output file must have a distinct name.
The command I wish to run is of the form:
program_name -input -output -o1 -o2…
>>> More
as seen on Stack Overflow
- Search for 'Stack Overflow'
I want to replace the a string with the word string as the following example down , but if a string exist also after comment then a string will replaced too
In which way I can add to the sed command the irregular exp that ignore from the #.
[root@localhost tmp]# more test
a
b
aa
bb
#a
#b
#aa
#bb
[root@localhost…
>>> More
as seen on Stack Overflow
- Search for 'Stack Overflow'
Hi,
I am using the following script to search and replace the deprecated functions in a file with the newer ones.
5 for strFile in `ls deprecated_functions_search_and_replace.txt `
6 do
7 sed "s/ereg_replace[^\(]*(\([^,]*\),/preg_replace\1('#'.\2.'#',/g" $strFile > temp_file
8 …
>>> More
as seen on Pro Webmasters
- Search for 'Pro Webmasters'
I have a footer which is set to 100% width, but if i size the window smaller so a horizontal scrollbar appears, using the scrollbar shows whitespace to the right of the footer ... its not spanned 100% of the page, just the viewport.
<!doctype html>
<html lang="en" class="no-js">
<head>
…
>>> More
as seen on Ask Ubuntu
- Search for 'Ask Ubuntu'
$ sed "s/\(^[a-z,0-9]*\)\(.*\)\( [a-z,0-9]*$\)/\1\2 \1/g" desired_file_name
I apreciate it even if you only explain part of it or at lest structure it with words as in s\alphanumerical_at_start\something\alphanumerical_at_end\something_else\global
Could someone explain what that means, why and…
>>> More
as seen on Ask Ubuntu
- Search for 'Ask Ubuntu'
Hello there.
I'm having a problem using the sed command . I'm trying to write a bash script that does the following :
search for the line that contain :@
then save the line that contained :@ and replace it with new line
as in the following:
#! /bin/bash
echo "Please enter the ip address…
>>> More
