Latest revision as of 18:28, 27 January 2022

A collection of tips & tricks for using Linux...

Restart a service

or

Where "FOOBAR" is the name of the service you want to restart...

Here are the default shortcuts. You can customize them in Keyboard Settings, as shown in the image that started this post.

Print may have its own special label on your keyboard. On mine the Print key is labeled PrtSc.

#!/bin/bash 
if nc -zw1 pfSense 443
then
  echo "We have DNS..."
else
  echo "NOPE!  No DNS..."
  sudo systemctl restart systemd-resolved
  exit
fi

Uses netcat (nc) to simply check if the router (pfsense) is currently findable by name & responding to HTTPS (port 443).

Then either tells you if it's OK or asks for your password to restart the DNS resolver.

yes "$(seq 231 -1 16)" | while read i; do printf "\x1b[48;5;${i}m\n"; sleep .02; done

Open your favourite editor and add the strings that you want to be shown when running "fortune" in terminal. BE SURE to add a single line with a letter % in it, between every string.
Save this file to whatever file name you want; this guide uses "yourlist" as example.
When done adding strings, the following command will create a .dat file for your cookie file, which contains a header structure and a table of file offsets for each group of lines. This allows random access of the strings.
- strfile -c % yourlist yourlist.dat
Run fortune yourlist to eat the fruit of your work. That's it!
Might wanna put this in /usr/share/games/fortunes if you want it to actually work tho...

(Do note... It's a sudo thing...)

@@ Line 57: / Line 57: @@
 Then either tells you if it's OK or asks for your password to restart the [https://www.man7.org/linux/man-pages/man8/systemd-resolved.8.html DNS resolver].
-= Dumb Stuff =
+= Less "Useful" Stuff =
 == Kind of a silly little on-liner to paint a rainbow in the terminal... ==
@@ Line 77: / Line 77: @@
 * [https://www.cyberciti.biz/tips/how-do-i-save-recover-data-from-crashed-disks-with-dd-and-ddrescue-command.html Save and Recover Data From Crashed Disks With ddrescue Command Like a Pro]
 * [[Linux - Process Supervision using Monit{{!}}Process Supervision using Monit]]
-* [https://www.youtube.com/watch?v=C3sPd3slAho How to Make Linux Hate You]
 * [https://unix.stackexchange.com/questions/254477/linux-alternative-to-altnumpad-codes Linux alternative to alt+numpad codes]
 * [https://unix.stackexchange.com/questions/159094/how-to-install-a-deb-file-by-dpkg-i-or-by-apt How to install a deb file, by dpkg -i or by apt?]
@@ Line 86: / Line 85: @@
 ** Right click on an empty-is spot...Verify it's not in '''Panel edit mode'''
 * [https://forums.linuxmint.com/viewtopic.php?t=249705 <nowiki>[SOLVED]</nowiki> gnome-keyring-daemon prevents shutdown]
 [[Category:Linux]]
 [[Category:Knowledge]]