Usefull snippets

Here some usefull snippets

- This can change the default open application for .gpx files with an executable.


mimeopen -d sample.gpx

- This will mute sound for 5 minutes (mutesound.sh)


amixer set Master mute

sleep 285 && amixer set Master unmute &

- This is will block internet connection except the current terminal (lowband.sh)


 #!/bin/sh

 # Firewall apps - only allow apps run from "internet" group to run

 # clear previous rules

 sudo iptables -F

 # accept packets for internet group

 sudo iptables -A OUTPUT -p tcp -m owner --gid-owner internet -j ACCEPT

 # also allow local connections

 sudo iptables -A OUTPUT -p tcp -d 127.0.0.1 -j ACCEPT

 sudo iptables -A OUTPUT -p tcp -d 192.168.0.1/24 -j ACCEPT

 # reject packets for other users

 sudo iptables -A OUTPUT -p tcp -j REJECT

 # open a shell with internet access

 sudo -g internet -s

- This is an awk that can be used to rename files (rename.awk)


 #ls | awk -f rename.awk |sh

 # will remove xyz. from beggining of files

 {

 ret = match ($0,"xyz.");

 if (ret==1){

  pos = match($0,"-")

  print "mv '"$0"' '"substr($0,pos+2)"'"

  }

 }

-This will convert greek text files to utf8 format (iconv.sh)


 iconv -fiso-8859-7 -tutf8 $1 >temp$.$$$

 mv $1 $1.old

 mv temp$.$$$ $1

- This will set screen to sleep (sleep.sh)


 xset dpms force off

- This is used to start gitk (git viewer) (gitk.sh)


 gitk --branches=* &

-This will start vlc (startvlc.sh)


 vlc  --qt-start-minimized /home/kostas/Music/radios.m3u

- To start wine with file manager in x files (w.sh)


 wine start "x:"

   to setup wine run :


 winecfg

   then:
     In drives -> add x: \home\kostas\WINDOWS to access windows path with x: drive
     In default settings (or in a selected .exe) windows version : windows XP
     For foul screen games/apps In default settings (or in a selected game.exe)
     graphics -> emulate virtual desktop in desired resolution.
     If this does not work change resolution from Ubuntu -> settings -> display

- How to create autoexec.sh file in Ubuntu

Create ~/.config/autostart/ folder. Inside this folder create a file with name btauto.desktop
Add this text to this file:


[Desktop Entry]

Type=Application

Exec=/home/kostas/.config/autostart/autoexec.sh

Hidden=false

NoDisplay=false

X-GNOME-Autostart-enabled=true

Name=BTAutoConnect

X-GNOME-Autostart-Delay=1

Comment=execute autoexec.sh on start

In the same folder (~/.config/autostart/) add the autoexec.sh file. This file will be executed
after login to user's account.


#!/bin/bash

# echo "connect 04:51:9B:35:10:44" | bluetoothctl

exit

All snippets are in this zip file:usefull.zip

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