Linux desktop shortcut and icon from install
What do I need to add to my .spec file to create the desktop shortcut and assign an icon to the shortcut during install of my .rpm? If a script is required, an example would be very helpful. ...
linux
Change IP address via shellscript on Slackware
In a shellscript, I'd like to set the IP of my box, run a command, then move to the next IP. The IPs are an entire C block. The question is how do I set the IP of the box without editing a file? What command sets the IP on Slackware? Thanks ...
How to overcome an incompatibility between the ksh on Linux vs. that installed on AIX/Solaris/HPUX?
I am involved in the process of porting a system containing several hundreds of ksh scripts from AIX, Solaris and HPUX to Linux. I have come across the following difference in the way ksh behaves on the two systems: #!/bin/ksh flag=false echo "a\nb" | while read x do flag=true done echo "flag = ${flag}" exit 0 On AIX, Solaris and ...
How do you force a CIFS connection to unmount
I have a CIFS share mounted on a Linux machine. The CIFS server is down, or the internet connection is down, and anything that touches the CIFS mount now takes several minutes to timeout, and is unkillable while you wait. I can't even run ls in my home directory because there is a symlink pointing inside the CIFS mount and ls tries to...
is there a way for my binary to react to some global hotkeys in linux ?
Is it possible to listen for a certain hotkey ( e.g:Ctrl-I ) and then perform a specific action ? My application is written in C , will only run on Linux , and it doesn't have a GUI . Are there any libraries that help with this kind of task ? EDIT:as an example,amarok has global shortcuts , so for example if you map a combination of key...
where can I find vim-enhanced resources?
I recently installed vim-enhanced , but I can't find any article/tutorial related to it.All I could find is a page that briefly describes it's new features , along with several RPM's to download . What exactly does it have to offer to scripting languages that regular vi/vim can't ? Thanks ...
Which resources should one monitor on a Linux server running a web-server or database
When running any kind of server under load there are several resources that one would like to monitor to make sure that the server is healthy. This is specifically true when testing the system under load. Some examples for this would be CPU utilization, memory usage, and perhaps disk space. What other resource should I be monitoring, a...
Detecting a chroot jail from within
How can one detect being in a chroot jail without root privileges? Assume a standard BSD or Linux system. The best I came up with was to look at the inode value for "/" and to consider whether it is reasonably low, but I would like a more accurate method for detection. [edit 20080916 142430 EST] Simply looking around the filesystem is...
XSLT processing in/from ruby
Can anyone recommend an efficient method to execute XSLT transforms of XML data within a Ruby application? The XSL gem (REXSL) is not available yet, and while I have seen a project or two that implement it, I'm wary of using them so early on. A friend had recommended a shell out call to Perl, but I'm worried about resources. This is fo...
Is it possible to offline a disk in a raidz zfs pool?
When i try to offline a disk in a zfs raidz pool (the raidz pool is not mirrored), zfs says that the disk cannot be taken offline because it has no valid mirror. Isn't one of the properties of raidz that it has a redundant disk (or even 2 disks in raidz2)...? ...
Improving SQL Server performance on VMware under Linux
I have a Linux server in a small company (3 users) acting as a domain server and running two VMs under VMware: one has SQL Server 2000 on it and one has SQL Server 2005, in each case running on Win2k. Each of the SQL Servers has a couple of small-but-important databases. As near as I can tell, the Linux server spends its life utterly b...
mount rootfs on loopback
I have a rootfs boot image that I want to test by mounting on my local file system. How can I do this ? EDIT: The file was a rootfs.img but it turned out I did not have the correct filesystem support in my custom kernel. pjz's answer works once the fs support is there. ...
How do you measure downstream bandwidth per user?
In a Linux-based system (specifically, Ubuntu Server 8.04), how can you measure downstream bandwidth on a per-user basis? Optimally, I would like a method that provides data directly instead of having to run another process and parse its output. I have a technique for measuring per-user upstream bandwidth by setting up one iptables fil...
Printings using CUPS, when can my app quit?
I have an linux app that uses cups for printing, but I've noticed that if I print and then quit my app right away my printout never appears. So I assume that my app has to wait for it to actually come out of the printer before quitting, so does anyone know how to tell when it's finished printing?? I'm using libcups to print a postscript...
What's a simple method to dump pipe input to a file? (Linux)
I'm looking for a little shell script that will take anything piped into it, and dump it to a file.. for email debugging purposes. Any ideas? ...
PHP Deployment to windows/unix servers
We have various php projects developed on windows (xampp) that need to be deployed to a mix of linux/windows servers. We've used capistrano in the past to deploy from windows to the linux servers, but recent changes in architecture and windows servers left the old config not working. The recipe works fine for the linux deployment, but ...
Redraw screen in terminal
How do some programs edit whats being displayed on the terminal (to pick a random example, the program 'sl')? I'm thinking of the Linux terminal here, it may happen in other OS's too, I don't know. I've always thought once some text was displayed, it stayed there. How do you change it without redrawing the entire screen? ...
Rich User Interface on Embedded Linux Device
I'm designing a user interface for a large touchscreen device running Linux. What would be the best toolkit/developer kit/SDK to use? The only requirement is that its able to run on a semi-low performace device, and that there is a Linux version. Nice-to-haves would be build in support for effects/animations and a modern look-and-feel...
Bursty writes to SD/USB stalling my time-critical apps on embedded Linux
I'm working on an embedded Linux project that interfaces an ARM9 to a hardware video encoder chip, and writes the video out to SD card or USB stick. The software architecture involves a kernel driver that reads data into a pool of buffers, and a userland app that writes the data to a file on the mounted removable device. I am finding th...
C++ gdb GUI
Briefly: Does anyone know of a GUI for gdb that brings it on par or close to the feature set you get in the more recent version of Visual C++? In detail: As someone who has spent a lot of time programming in Windows, one of the larger stumbling blocks I've found whenever I have to code C++ in Linux is that debugging anything using comm...