HPR4088: Today I Learnt more Bash tips

Today I Learnt more Bash tips

Sgoti talks about supplying options to bash scripts

• Tags: Bash tips, TIL, getopts

#!/bin/bash
# License: GPL v3
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

#Name: showtime.sh
#Purpose: Time to make a show.
#Version: beta 0.01
#Author: SGOTI (Some Guy On The Internet)
#Date: 2023-12-29

#variables:

bindir=/usr/bin/

cat=${bindir}cat
date=${bindir}date
echo=${bindir}echo
mkdir=${bindir}mkdir

dirshow0=${HOME}/Music/hpr/shows
dirshow1=${dirshow0}/$(${date} +%Y)
dirqueue=${dirshow1}/queue/$(${date} +%F)
dirreserve=${dirshow1}/reserve-queue/$(${date} +%F)

#start:

function help() {
${cat} << EOH
Usage: $0 [-s] [-r] [-q] [-h] name-of-show

    -s    (Regular queue)
    -r    (Reserve queue)
    -q    (quit)
    -h    (help)

Examples:
        $0 -s name-of-show
        $0 -r name-of-show
        $0 -q
        $0 -h

EOH
}

## Use `getopts` to read user option into script. ##
while getopts ":s:r:q:h" option; do
    case $option in
        s)
        show=$OPTARG

function mkq () {
    ${mkdir} -v -p ${dirqueue}/${show}/edit;
    ${mkdir} -v -p ${dirqueue}/${show}/prod;
    ${cat} > ${dirqueue}/${show}/edit/${show}.md << _EOD_
# ${show} #

## subtitle ##

- Tags:



This work is licensed under a [Creative Commons Attribution-ShareAlike 4.0 International License](https://creativecommons.org/licenses/by-sa/4.0/ "CC-BY-SA 4.0 International").

_EOD_

    builtin pushd -n ${dirqueue}/${show}/edit;
    builtin pushd -n ${dirqueue}/${show}/prod;
}

        if [ -d ${dirshow1} ]; then
            mkq
        else
            ${echo} "Good Heavens! It's a new year.";
            ${mkdir} -v -p ${dirshow1};

            mkq
        fi
        ;;

        r)
        reserve=$OPTARG
function mkr () {
    ${mkdir} -v -p ${dirreserve}/${reserve}/edit;
    ${mkdir} -v -p ${dirreserve}/${reserve}/prod;
    ${cat} > ${dirreserve}/${reserve}/edit/${reserve}.md << _EOD_
# ${reserve} #

## subtitle ##

- Tags:



This work is licensed under a [Creative Commons Attribution-ShareAlike 4.0 International License](https://creativecommons.org/licenses/by-sa/4.0/ "CC-BY-SA 4.0 International").

_EOD_

    builtin pushd -n ${dirreserve}/${reserve}/edit;
    builtin pushd -n ${dirreserve}/${reserve}/prod;
}

        if [ -d ${dirshow1} ]; then
            mkr
        else
            ${echo} "Good Heavens! It's a new year.";
            ${mkdir} -v -p ${dirshow1};

            mkr
        fi
        ;;

        q)
        ${echo} "Goodbye.";
        exit
        ;;

        h)
        help
        exit
        ;;

        *)
        if [ -z "${option}" ]; then
            help
            exit 1
        fi

        ${echo} "Good Heavens! Invalid input.";
        help
        exit
        ;;
    esac
done


exit;

#!/bin/bash
# License: GPL v3
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

#Name: sc.sh
#Purpose:
#Version: beta 0.01
#Author: SGOTI (Some Guy On The Internet)
#Date: 2023-12-31

#variables:

bindir=/usr/bin/

cat=${bindir}cat
date=${bindir}date
echo=${bindir}echo
ls=${bindir}ls
screen=${bindir}screen

#start:

    ${echo} -e "\nStep 0: $(${date} +%F), $(${date} +%T)";

function help() {
${cat} << EOH
Usage: $0 [-b] [-s] [-k] [-h] name-of-show

    -b [y|n] (Create or kill, base sockets.)
    -s       (Create new sockets.)
    -k       (Kill sockets.)
    -h       (help menu)

Examples:
        $0 -b y
        $0 -b n
        $0 -s name-of-socket
        $0 -k name-of-socket
        $0 -h

EOH
}

    ${echo} -e "\nStep 1: $(${date} +%F), $(${date} +%T)";

while getopts ":b:s:k:h:" option; do
    case "${option}" in
        b)
        userinput0=$OPTARG
        if [ ${userinput0} == "y" ]; then
        ${screen} -dmS apps;
        ${screen} -dmS jobby;
        ${screen} -ls;
        elif [ ${userinput0} == "n" ]; then
        # You don't need the entire name to kill the socket.
        ${screen} -X -S "app" kill
        ${screen} -X -S "job" kill
        ${screen} -ls;
        else
        ${echo} "Good Heavens!"
        ${screen} -ls;
            help
            exit 1
        fi
        ;;

        s)
        userinput0=$OPTARG
        ${screen} -dmS "${userinput0}";
            clear
        ${screen} -ls;
            ${echo} -e "\nNew sockets: $(${date} +%F), $(${date} +%T)";
        ;;

        k)
        userinput0=$OPTARG
        ${screen} -XS ${userinput0} kill
            clear
        ${screen} -ls;
            ${echo} -e "\nKill sockets: $(${date} +%F), $(${date} +%T)";
        ;;

        h)
        help
            ${echo} -e "\nHelp menu: $(${date} +%F), $(${date} +%T)";
        exit
        ;;

        *)
        if [ -z "${option}" ]; then
            help
            exit 1
        fi

        ${echo} "Good Heavens! Invalid input.";
        help
        exit
        ;;
    esac
done

    ${echo} -e "\nStep 2: $(${date} +%F), $(${date} +%T)";

exit;

• Source: In-Depth Series: Today I Learnt
• Source: In-Depth Series: Bash Scripting

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

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