I am just trying to compile some simple example code I typed in from a book, and GCC gives me the above error. Here’s my code: The code is supposed to invoke the syslog() system call to read the last 128 bytes from the kernel printk() ring buffer. Here is some information about my OS and system configur…
Tag: linux
What does “visudo: Warning: Cmnd_Alias `NOPASSWD’ referenced but not defined,” mean?
I am editing the file sudoer using the visudo command. When I am done saving the file this warning appears. I am not able to remotely execute a particular file as a non root user. I think this warning might have something to do with it. How do I resolve this warning? EDIT: It is actually NOPASSWD Answer Like …
google-charts not getting displayed on the server
My code: On running my app (created in Django) on the server this chart is not getting displayed, why? This page is “results.html” which is directed from my views.py file. Here “list1” contains the data stored in the table namely “file_name” and “frequency_count”…
Create multiple Debian packages for data files from one source
I have a bunch of dictionary files for the dictd dictionary program. There are 2 files for each dictionary (a dict.dz and a .index file) and there are 8 dictionaries in total. The installation of the dictionaries is really simple, this is what I currently have in my script: Now I want to package this lot of f…
How to force a priority on QProcess
I do not see any API to set the priority of a QProcess in Qt Documentation. I assume the process is started with normal priority. Is there a way to start the process with lower priority on Linux? Answer I dont think there exists an API to set the priority of the process using a Qt call. I used direct
how to replace a block of text after a match in sed
In sed, I’d like to replace a multi-line block of text after a match, for example, after matching “foo”, supposing its line number is 0. I want to replace the text block from line -3 to line +5, i.e. the text bock between the third line proceeding the matching line and the fifth line after t…
Minify and join CSS & JS files on linux, server side
In my project, for example, I have this structure: After changes have been made, I would like to type in command line something like: which would generate two files: For the moment I am using less css, which is working on node. I would like to have one script that will do everything, for css as for javascript…
wget -O for non-existing save path?
I can’t wget while there is no path already to save. I mean, wget doens’t work for the non-existing save paths. For e.g: If /path/to/image/ is not previously existed, it always returns: How can i make it work to automatically create the path and save? Answer Try curl
handling vps numproc limits
this is my vps package £14.99 uk pounds a month, so not to expensive. Thay are limiting numproc to 96, they didn’t make it obvious that this was a limit when I signed up, but I suppose it is my fault for not asking. I am running Tomcat and if I run out of numproc then Java will crash and
PhantomJS doesn’t work in PHP through browser (but does via command line, and even by running PHP through command line)
I’m trying to get PhantomJS to run via PHP. When I run the JavaScript file directly through the command line, it works fine. When I run php render_html.php in the command line, which just runs an exec(), it works fine. However, when I try opening this php file in the browser, it does nothing. I don̵…