Wifi and LAN at the same time - force using wifi to access internet

In order to play music from my NAS connected to router I must be connected to the same network. But I want to use wifi to browse internet on faster connection from different network. By default with wifi connected and lan cable simultaneously my elementary os was using lan network for all trafic.

Below command switched it to wifi:

sudo ip route replace default via 192.168.1.1 dev wlan0 proto static

IP 192.168.1.1 is the gateway from wifi network.

Undelete files on Linux

I accidentally deleted pictures from SD Card from my tablet. Any android undelete applications failed to identify what I was looking for. I decided to try undelete on my elementary os and the choice was to use PhotoRec. That program recovers lost files by checking data blocks one by one against a signature database of different file types.

• Supported file formats: video (avi, mov, mp3, mp4, mpg), image (jpg, gif, png), audio (mp3, ogg), document (doc(x), ppt(x), xls(x), html), archive (gz, zip) etc.
• Supported file systems: EXT2, EXT3, EXT4, HFS+, FAT, NTFS, exFAT

Took most recent version:

For 32-bit Linux:

wget http://www.cgsecurity.org/testdisk-7.0-WIP.linux26.tar.bz2

tar xvfvj testdisk-7.0-WIP.linux26.tar.bz2

For 64-bit Linux:

wget http://www.cgsecurity.org/testdisk-7.0-WIP.linux26-x86_64.tar.bz2

tar xvfvj testdisk-7.0-WIP.linux26-x86_64.tar.bz2

The PhotoRec executable (photorec_static) is found in the extracted directory.

cd testdisk-7.0-WIP/

sudo ./photorec_static 

Next I selected default options. Next challenge was to find pictures that I was looking for among over 50 000 recovered files in multiple subfolders. Most of them were cached browser images and any android stuff. My pictures were large, more than 4 MB. I used find command to copy qualified files to another folder:

find . -type f -size +4M -name "*.jpg" -exec cp {} /home/lukasz/Downloads/testdisk-7.0-WIP/Recovered/Large \;

Finally all my files were in Large folder.