Linux: Difference between revisions
From Wiki
mNo edit summary |
(Add keyboard layout switch in X window system) |
||
Line 90: | Line 90: | ||
wget -r --no-parent http://www.hpmor.com/ | wget -r --no-parent http://www.hpmor.com/ | ||
ebook-convert index.html hpmor.epub | ebook-convert index.html hpmor.epub | ||
</pre> | |||
= Switch to Colemak layout in X window system = | |||
<pre> | |||
setxkbmap us -variant colemak | |||
</pre> | </pre> |
Revision as of 13:22, 31 August 2018
Network Tricks
Connecting to two networks - one Wi-Fi and one wired
Wi-Fi network has internet, wired does not. Then, disable the gateway of the Wired network for internet access.
Show the networks
$ ip route show
Smaller metric number means higher priority for the gateway
Remove the gateway of the wired network
$ sudo ip route del default via 192.168.1.1
chroot into a Raspberry Pi
Mount sequence
mount /dev/sdb3 /mnt mount /dev/sdb2 /mnt/boot mount /dev/sdb1 /mnt/boot/firmware mount -o bind /proc /mnt/proc mount -o bind /sys /mnt/sys mount -o bind /dev /mnt/dev mount -o bind /dev/pts /mnt/dev/pts cp /usr/bin/qemu-arm-static /mnt/usr/bin chroot /mnt
Doing stuff in chroot
Example: Fixing a broken apt install
dpkg --configure -a apt -f install exit
Unmount sequence
umount /mnt/dev/pts umount /mnt/dev/ umount /mnt/sys umount /mnt/proc umount /mnt/boot/firmware umount /mnt/boot/ umount /mnt
Creating a desktop launcher on Gnome
Install gnome-panel
sudo apt-get install --no-install-recommends gnome-panel
Open the Create Launcher dialog and enter the details for the launcher
sudo gnome-desktop-item-edit --create-new /usr/share/applications
Done.
Trimming a video
ffmpeg can be used to trim a video from a given start time to end time.
ffmpeg -i video.webm -ss 00:00:00 -t 00:05:04 -async 1 video-cut.webm
Create ebook from a website using Calibre
Some free books on the internet are available as HTML pages.
An epub file is simply an archive of HTML pages that can be treated as an ebook.
A book website can be stitched into an ebook using wget
and calibre
wget -r --no-parent http://www.hpmor.com/ ebook-convert index.html hpmor.epub
Switch to Colemak layout in X window system
setxkbmap us -variant colemak