HPR4088: Today I Learnt more Bash tips

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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 . #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 . #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

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