So, I have this textfile, and it consists of mostly alphanumeric characters. It's a standard document. But since I copied it and pasted it from a PDF, there are page numbers in there. I don't much care for the occasional number that's not a page, so I figure I'll wipe them all out with sed or tr....

I have an acer aspire 7551 laptop running windows 7 and I've successfully used wubi to also install ubuntu (the latest release version). Wireless works fine on windows 7, but neither wireless nor ethernet works on ubuntu. In particular, the wireless icon shows up at the top-right (but no availab...

So I managed to install Debian 5 on an eBox 3300MX (an embedded type computer). I added a custom kernel after getting a basic install done. That was to get the network card to work. After that, I finished with installing, since I was doing a net install, and it worked fine. However, since then, I...

Hello, there! I was a Debian user, but for some reason, after I installed Arch Linux, my monitor started to blink. I first thought that this was X-related, but it happens even on text mode (but not on GRUB). Any idea on what could be happening and how to fix it? I installed very few programs: v...

For example, when $TM_FILEPATH is /abc/def.c I need to get the /abc/def. How can I do that with bash?

i have written a function which acts in a similar way to tee but also pre-pends a datestamp. everything works fine except when i want to output to a file which is only root writeable (in my case a logfile within /var/log). i've simplified the following code snippet to just include the bits which ...

What is SSH - the protocol? What is ssh - the unix utility and how does it work? How is SSH protocol related to SFTP? What is sshd? Does the command su use ssh or sshd?

I have setup rsyslog to write messages from local0.* to a seperate logfile, and then discard the messages. For some reason, the logs are going to both /var/log/syslog, and the new logfile. I have put the config in rsyslog.d/30-local0.conf, which as far as i know, should come before the 50-defau...

I'm running Debian Squeeze and removed Metacity in favor of Mutter. How do I avoid having to run mutter --replace each time I start Xorg (GNOME)?

I am looking for understanding EXT3 filesystem source code. I think I need a little pre-digestion to fully understand the code. Can anyone please suggest some material(blog etc.) where I can get some basic understanding of the source code.

Upgraded to Bash4 and found that it is not matching regexes: $ echo $BASH_VERSION 4.1.2(1)-release $ [[ "20110228" =~ "^[0-9]{8}$" ]] && echo matches But Bash 3.0 is: $ echo $BASH_VERSION 3.00.16(1)-release $ [[ "20110228" =~ "^[0-9]{8}$" ]] && echo matches matches Why mig...

Is it possible to find all php files within a certain directory that have been modified on a certain date I'm using find /var/www/html/dir/ -mtime -28 | grep '\.php' to get files modified within the last 28 days, but I only need files that have been modified on the following date 2011-02-08

Hi When I read this answer about $? another question comes to mind. Is there any best practice for how to use $? in bash? Let's have a example: We have a linear script and I we would like to know that all the command was executed ok. Do you think it is ok to call a small function (let's ca...

Is there a linux command or some way to look at logs from bottom up rather than from top towards bottom. I know about tail -n number of lines, is there something that I can actually scroll and go from bottom up ? Thank you

I have bought a Lexmar Impact S305 scanner / printer. There was the small penguin and the word "Linux" among supported systems on the box. The problem is the official drivers are only for Debian based and RPM based distros. I haven't found unofficial drivers. There is graphic installer. It fails...

I'm using rsync and the flags -nPaAXz ~/ to check which files are going to be copied. This is far to verbose to make any sense of. How could I filter the output so I view the list of files/folders that are going to be copied to a certain depth, eg: 1 folder deep /home/afile /home/afolder/ /ho...

What Linux distribution(s) contribute most to the Gnome project? If I plan to contribute to the Gnome project, an I advised to use THAT distribution as my primary development platform or does my choice remain a simple matter of taste? Thanks.

I have installed an OpenVPN server on my OpenWrt 10.03 router [freshly flashed]: https://pastebin.com/raw.php?i=hRECWuf1 It seems "ok". I connect my pc to the lan port of the router, and i want to try it out. I'm using Fedora 14 with GNOME. In the NetworkManager applet i set these things: thi...

Let's assume: I have a mirror of the source repository locally. I only want to build for the architecture I'm running, which is i386 in my case. I'm not interested in customisation. In fact, I want the resulting binary packages to be as close to official ones as possible. From there on, I'll ta...

I had a function inside .zshrc that I removed. Now, when I try to source it, it indeed sources it, but doesn't remove the function that once was inside .zshrc from memory. Is there a way to remove the function (now I believe in memory, in zsh namespace or something like that) without restarting...

I have no experience with any Linux operating system and I just put Ubuntu on my MacBook Pro. What would you professionals recommend a beginner do to learn how to use this OS to its full potential? I've come across this - http://www.linuxlots.com/~jam/ Ideally when I learn to program I want th...

I need a command line for pc os linux for mplayer. Im not finding the command anywhwere and when i try to use the zypper command to install mplayer it tells me i am not a sudoer please help me

I have a 1900x1080 resolution monitor, and after installing Fedora to create a dual boot machine, the maximum resolution Fedora 14 (previously only Windows 7 was installed) can achieve is 1280x1024. Why is this the case? How do I figure out what to do to get full native resolution on my monitor i...