sed -i 's/original/new/g' filename.txt
This basically replaces every occurrence of the “original” string with the “new” string in the file named “filename.txt”
e.g.
sed -i 's/192.168.0.1/192.168.1.1/g' /etc/fstab
Will replace all occurrences of the IP “192.168.0.1” with the IP “192.168.1.1” in the “/etc/fstab” file.
That’s it, Enjoy!
Sources:
It’s Tilda! My previous best was Guake, but it’s having compatibility issues and not maintained frequently like this one.
sudo apt install tilda
Very customizable and has a lot of options, including position, colors, scroll bars and transparency.
Tested on Ubuntu 17.10 (Works ONLY on Xorg, not Wayland).
Tilda on Ubuntu 17.10
Just go to Online Accounts -> Microsoft Exchange -> Type your e-mail and password!
This basically connects using Exchange Web Services (EWS).
If this doesn’t work out with you, click on custom and enter your username and server. I had to do that in my case, since my mail server’s address was different from the mail address.
That’s it! Enjoy! Here are some screenshots showing the results :))
Evolution Contacts
Evolution Calendar
Evolution Mail
Note: Tested and worked perfectly in Ubuntu 17.10 (Gnome 3.26).
Sources:
ffmpeg -i source_video.mp4 -t 50 -c copy output_video.mp4
This cuts the first 50 seconds of the video named source_video.mp4 and outputs them without any re-encoding to output_video.mp4
Another example for audio files:
ffmpeg -i input_file.mp3 -ss 00:00:05 -t 00:00:21 -c copy output_file.mp3
This cuts the audio file from the 5th second to the 21st second and places it in a file named output_file.mp3, no re-encoding done whatsoever.
Source: https://ubuntuforums.org/showthread.php?t=2027333
Just received a 128 GB SanDisk Extreme PRO USB 3.1 Solid State Flash Drive. I wanted to check whether its speed really matches what’s advertised of up to 420 MB/s for read and 380 MB/s for write.
Computer Used: Lenovo Thinkpad X1 Carbon
OS: Ubuntu 16.04.3
Benchmark Tool: Standard Gnome Disks Utility
Features Tested: Read Speed, Write Speed and Random Access
Testing Samples:
Average Read Rate: 423 MB/s
Average Write Rate: 188 MB/s
The SanDisk Extreme PRO USB Drive Read speed is 420 MB/s as advertised, however, the write speed is much lower than the promised 380 MB/s. It’s a quite fast USB drive, especially for read, but the write speed is about half what SanDisk claims (although still very fast for a USB drive).
Just Some Techie Notes! 