Install Fights in Linux

If you are using postgis and a cleaner in your database, maybe you could have this error: ERROR:  GetProj4StringSPI: Cannot find SRID (4326) in spatial_ref_sys SQL state: XX000 This error means that your spatial_ref_sys table is empty To fix it, just restore the information that postgis generate when you create this extension in your database. To do it execute the following sentence: psql -d $database_name -f $PATH/spatial_ref_sys.sql where the PATH is the path to spatial_ref_sys.sql For postgres 11 and postgis 2.5 the PATH is /usr/share/postgresql/11/contrib/postgis-2.5/ Other way to execute the same command is: PGPASSWORD=postgres psql "host=localhost dbname=$database_name user=postgres" -f /usr/share/postgresql/11/contrib/postgis-2.5/spatial_ref_sys.sql Enjoy it!

This is a common issue. If you try to execute pip3 you probably will get: Command 'pip3' not found, but can be installed with: sudo apt install python3-pip or pip3 zsh: command not found: pip3 although you install it, anyway the same error appears To solve it, you can reinstall it: sudo apt-get remove python3-pip sudo apt-get install python3-pip or execute pip3 as python module: sudo python3 -m pip Enjoy it!

The best option is to use an extension to enable this option. sudo apt install python-nautilus nautilus bluez gnome-bluetooth python3 cd ~/.local/share/nautilus-python/extension wget https://raw.githubusercontent.com/TheWeirdDev/nautilus-send-to-bluetooth/master/SendToBluetooth.py nautilus -q HINT: Also you can use /usr/share/nautilus-python/extensions/ to store your extensions Enjoy it! Source:  https://github.com/TheWeirdDev/nautilus-send-to-bluetooth

First, we need to install nautilus-python extension: sudo apt install python-nautilus Now, you need to create the extensions folder: mkdir ~/.local/share/nautilus-python cd ~/.local/share/nautilus-python mkdir extensions cd extensions To finish, download the extension to enable execute terminator in nautilus: wget  http://www.giuspen.com/software/nau3pyext/open-terminal-here.py Edit it and change the label variable "Open Terminal Here" by "Open Terminator" To restart nautilus, just execute: nautilus -q nautilus If you don't have terminator as your default terminal, it is enough to choose it when executing the following command: sudo update-alternatives --config x-terminal-emulator UPDATED In Ubuntu 20.10 the previous tutorial doesn't work. An alternative is to install a nautilus-extension for several terminals: pip3 install nautilus-open-any-terminal Edit ~/.local/share/nautilus-python/extensions/open_any_terminal_extension.py an...

If you have issues with Matlab to run commands without root, probably you will see this: INFO: READ:  OnSendHeadersMessage{type=OnSendHeaders, uid=557, browserContextId=0, requestId=57, url=https://localhost:31515/messageservice/async, method=POST, headers=Origin: https://localhost:31515 X-Requested-With: XMLHttpRequest User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.52 Safari/537.36 Content-Type: application/json Accept: */* Referer: https://localhost:31515/remote/proxy/1.5/iframeProxyRelease.html Accept-Encoding: gzip, deflate Accept-Language: en-us Cookie: JSESSIONID2=aUWOscLC3o6cqUdV; ssnc=24WR68u39rLEOyhW }, SocketInfo{channelId=0, browserId=-1, channelType=Main} To fix it, just add permissions to your user with: sudo chown -R $USER:$USER /usr/local/MATLAB/R2018b If you run Matlab again, you will see this: at com.mathworks.mlwidgets.shortcuts.ShortcutUtils.getShortcutsFile(ShortcutUtils.java:703)...

UPDATED to Ubuntu 20.10 As you see, system-monitor is not more available in Ubuntu 18.10 For this reason, I search another utility to monitor my system and I find conky. It is a very personalizable tool that you can install with snap: sudo apt install conky Now, you need to configure it as you like, with you specific interfaces names, in /etc/conky/conky.conf Here is my first configuration: conky.config = {   use_spacer = 'left',   pad_percents = 3,   background = false,   double_buffer = true,   font = 'DejaVu Sans Mono:size=10',   use_xft = true,   alignment = 'top_right',   gap_x = 50,   gap_y = 200,   own_window_argb_visual = true,   own_window_argb_value = 0,   own_window_type = 'normal',   own_window_hints = 'undecorated,below,skip_taskbar,skip_pager,sticky',   own_window = true,   update_interval = 5.0, } conky.text = [[ #\${color orange}Hostname: \${color}\${nodename} ${color...

If you need migrate your packages to another computer, the best choice is to restore the packages to avoid install all of them again manually. I'm going to describe three tools that I test to do it. apt-clone is a tool for backup all your packages installed through apt. To install it just execute: sudo apt install apt-clone sudo apt-clone clone path_to_save_backup Now, to restore the packages, just copy this file in your new station and execute the following: sudo apt-clone restore apt-clone-state-*.tar.gz It works very well, but some times you can get this error: Deja-dup is other tool to make backups and restore your packages. When I run it, I got this message: InvalidBackendURL: missing // - relative paths not supported for scheme invalid: invalid:// This bug was reported here  2 years ago, but still is not totally fixed Aptik is tyhe most functional tool with GUI. To install it just execute: sudo apt-add-repository -y ppa:teejee2008/ppa sudo apt-ge...

First, you must to detect every python package that you need to your proyect. An option is to use the following sentence: grep import file_name.py Now, you need to create a file called requirements.in with every package per line as: julia networkx To finalize, the version of each package must be included in the file. To do it, just use: pip-compile requirements.in  The file requirements.txt was created.  To run it in other environment, execute the following sentence: pip install -r requirement.txt Enjoy it!