Revision as of 17:32, 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 44: / Line 44: @@
 == A handy little script: ==
-#!/bin/bash
+ #!/bin/bash
   if nc -zw1 pfSense 443
   then
@@ Line 53: / Line 53: @@
     exit
   fi
 Uses [https://linux.die.net/man/1/nc netcat] (nc) to simply check if the router ([[NetMan - pfSense{{!}}pfsense]]) is currently findable by name & responding to HTTPS (port 443).