Mint Serena 64 bit using the Mate desktop environment. Most of the following scripts will run on this machine, although some have only been tested with the Gnome desktop. Extra software requirements can be met by the Ubuntu and safe PPA repositories. Scripts may be re-written or added to from time to time, the date serves as the version number. Syntax highlighting on these pages is provided by GVim's "Convert to HTML" option.

Fix Subtitle Offset


#!/bin/bash
# Filename: srt-fix-offset.sh
# Version.: 20052018
# Author..: not robz
# A script to modify subtitle offset beyond the Kodi maximum of 60 seconds.
# Put original titles in a file called "srt.txt" in your home directory and
# run the script.
# In all honesty this is pretty much a copy paste job from Linux Questions.
# For more detailed information goto:
# www.linuxquestions.org/questions/linux-newbie-8/editing-srt-files-4175436550/
#
# Modify and comment the offset variable as appropriate.
# Advance subtitles.
offset="75 seconds"
# Retard subtiles.
#offset="5 seconds ago"

while read start s end; do
    if [[ $start =~ ^..:..:..,... ]]; then
        start=$(date -d "$start $offset" +%H:%M:%S,%N)
        end=$(date -d "$end $offset" +%H:%M:%S,%N)
        echo ${start:0:12} $s ${end:0:12}
    else
        echo $start $s $end
    fi
done < srt.txt >> new-subtitles.srt

DAB Radio


#!/bin/bash
# Filename: dab-radio.sh
# Version.: 07022018
# Author..: robz
# Basic DAB radio via a cheap DVB-T dongle using a "zenity" gui and the command
# line version of "vlc player", see man vlc. The utility "wmctrl" places the gui
# top left of the screen. The initial scanning for radio stations I used the
# "w_scan" utility to create a playlist text file.

text="Make a selection"
optn=":dvb-frequency=522000000 :dvb-bandwidth=8 :dvb-ts-id=4168 \
:dvb-code-rate-hp=2/3 :dvb-modulation=64QAM :dvb-transmission=8 \
:dvb-guard=1/32 :program="

get_mplex () {
prog=$(zenity --list --radiolist --height=400 --width=200 --hide-header \
--title='robz DAB Radio' --text="$text" --column '' --column '' --column '' \
--hide-column=3 --print-column=ALL --ok-label='Play' \
FALSE 'BBC Radio 1' '6720' \
FALSE 'BBC Radio 1 Extra' '5888' \
FALSE 'BBC Radio 2' '6784' \
FALSE 'BBC Radio 3' '6848' \
FALSE 'BBC Radio 4' '6912' \
FALSE 'BBC Radio 4 Extra' '5824' \
FALSE 'BBC World Service' '6016' \
FALSE 'BBC Radio 5 Live' '5632' \
FALSE 'BBC Radio 5 Sport' '5696' \
FALSE 'BBC Radio 6 Music' '5760' \
FALSE 'BBC Manchester' '6152' \
FALSE 'BBC Lancashire' '6216'
)
}

while true; do
    (sleep .5 && wmctrl -r "robz DAB Radio" -e 1,0,0,200,400) &
    get_mplex
    text="<b>Playing: $(cut -d'|' -f1 <<< $prog)</b>"
    prog="$(cut -d'|' -f2 <<< $prog)"
    pkill -9 vlc
    if [ "$prog" = '' ]; then exit; fi
    (cvlc dvb-t:// $optn$prog > /dev/null 2>&1) &
done


Morse 2


#!/bin/bash
# Filename: morse2.sh
# Version.: 03102017
# Author..: robz
# Enter words hear morse.

trap 'kill -9 $pid 2>/dev/null; echo; exit' TERM EXIT

declare -A morse
morse[A]=".-"     morse[B]="-..."   morse[C]="-.-."   morse[D]="-.."
morse[E]="."      morse[F]="..-."   morse[G]="--."    morse[H]="...."
morse[I]=".."     morse[J]=".---"   morse[K]="-.-"    morse[L]=".-.."
morse[M]="--"     morse[N]="-."     morse[O]="---"    morse[P]=".--."
morse[Q]="--.-"   morse[R]=".-."    morse[S]="..."    morse[T]="-"
morse[U]="..-"    morse[V]="...-"   morse[W]=".--"    morse[X]="-..-"
morse[Y]="-.--"   morse[Z]="--.."   morse[1]=".----"  morse[2]="..---"
morse[3]="...--"  morse[4]="....-"  morse[5]="....."  morse[6]="-...."
morse[7]="--..."  morse[8]="---.."  morse[9]="----."  morse[0]="-----"
morse[.]=".-.-.-" morse[,]="--..--" morse[?]="..--.."

while true; do
    read -p "Input a word or sentence: " input
    echo
    while read -n1 character; do
        character="${character^^}"
        if [ "$character" ]; then
            echo -ne " $character\t"
            while read -n1 dotdash; do
                tput bold
                [ "$dotdash" = "." ] && duration="0.2" || duration="0.4"
                echo -n "$dotdash"
                (speaker-test -t sine -f 400 >/dev/null) & pid="$!";\
                sleep "$duration"; kill -9 "$pid"
                tput sgr0
            done < <(echo -n "${morse[$character]}")
            sleep 0.2; echo
        else sleep 0.4; echo
        fi 2> /dev/null
    done < <(echo -n "$input")
    echo
done

Morse


#!/bin/bash
# Filename: morse.sh
# Version.: 01102017
# Author..: robz
# Training aid to print out and recite morse code in a terminal.
# Get stuff "sudo apt install espeak"

tabs="\n"
code=(A .- B -... C -.-. D -.. E . F ..-. G --. H .... I .. J .--- K -.- \
L .-.. M -- N -. O --- P .--. Q --.- R .-. S ... T - U ..- V ...- W .-- X -..- \
Y -.-- Z --.. 1 .---- 2 ..--- 3 ...-- 4 ....- 5 ..... 6 -.... 7 --... 8 ---.. \
9 ----. 0 ----- stop .-.-.- comma --..-- query ..--..)

trap 'kill -9 $pid 2>/dev/null; exit' TERM EXIT

for character in {0..78..2}; do
    echo -ne "$tabs ${code[character]}\t"
    espeak -a 400 "${code[character]}"
    tput bold
    while read -n1 dotdash; do
        [ "$dotdash" = "." ] && duration="0.2" || duration="0.4"
        echo -n "$dotdash"
        (speaker-test -t sine -f 400 >/dev/null) & pid="$!";\
        sleep "$duration"; kill -9 "$pid"
    done < <(echo -n "${code[((character+1))]}")
    tput sgr0
    [ "$tabs" = "\n" ] && tabs="\t|\t" || tabs="\n"
    sleep 1
done 2> /dev/null
echo -e "\n\nEnd of morse code demo.\n"

exit

Raspberry Pi SSH


#!/bin/bash
# Filename: motd.sh
# Version : 23072017
# Author  : robz
# Raspberry Pi landing page SSH login script.
# Place this file in /etc/profile.d/ and set the executable bit.
# Interactive message of the day to display on secure shell login.
# It provides commands for control of "new-pvr.sh" PVR script.
# Add an alias to your .bashrc to call "motd.sh" info and menu.
# alias 1='/etc/profile.d/motd.sh'
# Then execute ". ~/.bashrc"

sudo killall -qg countLED.sh >/dev/null 2>&1

printf "\033c"
re="$(tput setaf 1)"; gr="$(tput setaf 2)"; ye="$(tput setaf 3)"
bl="$(tput setaf 4)"; mg="$(tput setaf 5)"; cy="$(tput setaf 6)"
gy="$(tput setaf 7)"; wh="$(tput setaf 9)"
myip="$(ifconfig eth0 | awk '/inet/{print $2}' | cut -d: -f2)"
boot="$(date -d "@"$(awk '/btime/{print $2}' /proc/stat) +"%d/%m/%y at %H:%M")"
last="$(last -i $(whoami) | awk 'NR==2 {print $1,$3,$4,$5,$6,$7}')"
uptm="$(awk '{print int($1/86400)" days, "int($1%86400/3600)" hours, "int($1%3600/60)" minutes"}' /proc/uptime)"
memo="$(free -m | awk 'NR==2 {print "Total: "$2"MB, Used: "$3"MB, Free: "$4"MB"}')"
free="$(df -h ~ | awk 'NR==2 {print "Total: "$2"B, Used: "$3"B, Free: "$4"B"}')"
stor="$(df -h /dev/sda1 | awk 'NR==2 {print "Total: "$2"B, Used: "$3"B, Free: "$4"B"}')"
temp="$(/opt/vc/bin/vcgencmd measure_temp | cut -c "6-9")ÂșC"
sess="$(cat /home/pi/Downloads/log/motd.txt)"
tput bold
printf "$bl""%`tput cols`s" | tr ' ' '_'
echo "$gr
    .~~.   .~~.
   '. \ ' ' / .'  $re
    .~ .~~~..~.   $re     Raspberry Pi$wh Torrent Box$re
   : .~.'~'.~. :  $wh     a.k.a. pi@$myip$re
  ~ (   ) (   ) ~ $wh     on robz home network.$re
 ( : '~'.~.'~' : )$wh     Welcome back! login: $(whoami)$re
  ~ .~ (   ) ~. ~ $wh     $(date +"%A %d %b %Y %H:%M")$re
   (  : '~' :  )  $wh     $(echo Kernel $(uname -ro))$re
    '~ .~~~. ~'
        '~'
$ye Last Login....:$bl $last
$ye Last boot.....:$bl $boot
$ye Uptime........:$bl $uptm
$ye Memory........:$bl $memo
$ye Home space....:$bl $free
$ye USB storage...:$bl $stor
$ye Temperature...:$bl $temp
"
tput sgr0
echo "$wh$sess"
echo
echo -e " User PVR commands, the \"#\" or \"Enter\" for a shell prompt.\n\
 1) - Display this \"motd\" message. \
 2) - Nano edit add-magnet.txt.\n\
 3) - View today's session log.    \
 4) - Nano edit followed-shows.txt.\n\
 5) - List recently downloaded.    \
 6) - List the \"Watch\" directory.\n\
 7) - View rss-today.txt file.     \
 8) - Run \"TED Talks\" downloader."

tput bold
printf "$bl""%`tput cols`s" | tr ' ' '_'
read -n1 n
printf "\033c"
case $n in
    1) /etc/profile.d/motd.sh;;
    2) nano ~/Downloads/scripts/add-magnet.txt;;
    3) cat ~/Downloads/log/"$(date +%a-%-d%b)"*runlog.txt; read -n1;;
    4) nano ~/Downloads/scripts/followed-shows.txt;;
    5) echo -e "\nRecently Downloaded\n"
    tac ~/Downloads/log/rec.txt; read -n1;;
    6) echo -e "\nTrackers in \"Watch\" directory\n"
    ls Downloads/Watch; read -n1;;
    7) cat ~/Downloads/log/rss-today.txt; read -n1;;
    8) /home/pi/Downloads/scripts/ted-talks.sh; read -n1;;
   "") killall motd.sh;;
esac
/etc/profile.d/motd.sh

# Add this alias to your .bashrc to call "motd.sh" info and menu.
# alias 1='/etc/profile.d/motd.sh'
# Then execute ". ~/.bashrc"