Introduction This is my short war story as I made Xilinx’ Impact, part of ISE 14.7, work on a Linux Mint 19 machine with a v4.15 Linux kernel. I should mention that I already use Vivado on the same machine, so the whole JTAG programming thing was already sorted out, including loading firmware into the [...]
Motivation Paid-per-time cloud services. I don’t want to forget one of those running, just to get a fat bill at the end of the month. And if the intended use is short sessions anyhow, make sure that the machine shuts down by itself after a given amount of time. Just make sure that a shutdown [...]
But why? Cronjobs typically consists of a single utility which we’re pretty confident about. Even if it takes quite some time to complete (updatedb, for example), there’s always a simple story, a single task to complete with a known beginning and end. If the task involves a shell script that calls a few utilities, that [...]
To make it short, the command at shell prompt is $ perl -MMIME::QuotedPrint -e ‘local $/; $x=<>; print decode_qp($x)’ < quoted.txt > unquoted.html and I needed this to extract an HTML segment of an email.
A tarball is the common way to convey several files on UNIX systems. But because tar was originally intended for backup, it stores not only the permission information, but also the owner and group of each file. Try listing the content of a tarball with e.g. $ tar -tzvf thestuff.tar.gz Note the “v” flag that [...]
After making a lot of whitespace reorganization in a kernel module (indentation, line breaks, fixing things reported by sparse and checkpatch), I wanted to make sure I didn’t really change anything. All edits were of the type that the compiler should be indifferent about, but how can I be sure I didn’t change anything accidentally? [...]
Leave no leftover childred One of the really tricky things about a Perl script that forks this way or another, is how to make sure that the children vanish after the parent has exited. This is an issue both if the children were created with a fork() call, or with a safe pipe, as with [...]
… or any other “unsupported” Linux distribution. … or: How to trick the installer into thinking you’re running one of the supported OSes. So I wanted to install Vivado 2020.1 on my Linux Mint 19 (Tara) machine. I downloaded the full package, and ran xsetup. A splash window appeared, and soon after it another window [...]
Just a quick note to remind myself: There’s a gap between the size of a disk, the used space and the available space. It’s quite well-known that a certain percentage of the disk (that’s 200 GB on a 3.6 TB backup disk) is saved for root-only writes. So the reminder is: No problem filling the [...]
When to do this Because Gnome desktop is sure it knows what’s best for me, and it’s virtually impossible to just tell it that I want this screen resolution mode and no other, there is only one option left: Lie about the monitor’s graphics mode capabilities. Make the kernel feed it with fake screen information [...]