bash note taking

notes.sh

#!/usr/bin/env bash

set +xv -eo pipefail;

MODULE="${1:-$(id -nu)}";
LOGFILE="${2:-$(date +%Y-%b-%d_%H%M%S)}";
LOGDIR=${LOGDIR:-~/.log};

mkdir -vp "${LOGDIR}";

if [[ "${MODULE}" != "$(id -nu)" ]]; then
        mkdir -vp "${LOGDIR}/${MODULE}";
        LOGDIR="${LOGDIR}/${MODULE}";
fi;

LOGFILE="${LOGDIR}/${LOGFILE}";
touch "${LOGFILE}";

TTY="$(tty)";
TAILN="$(($(tput lines || printf 20)/4))";

clear > "${TTY}";
tail -v -n "${TAILN}" "${LOGFILE}";

while read -rp "$(printf '\n\n$> ')"; do
        case "${REPLY}" in
                c|clear)
                        printf '' > "${LOGFILE}";
                ;;
                x*|exec*)
                        CMD=$(cut -d' ' -f2- <<< "${REPLY}");
                        printf '\n%s@%s\t%s\n' "${MODULE}" "$(date -u '+%FT%TZ')" "${CMD}" >> "${LOGFILE}";
                        ${CMD} 2>&1 | tee -a "${LOGFILE}" || true;
                ;;
                h|help)
                        printf '%s\n' "$(awk -v ORS=" " '/\|.*\)/ && !/printf/ {print $1}' ${0} | tr -d ')')";
                ;;
                l|list)
                        find "${LOGDIR}";
                ;;
                p|print)
                        clear > "${TTY}";
                        cat "${LOGFILE}";
                ;;
                q|quit)
                        exit;
                ;;
                *)
                        if [[ -n "${REPLY}" ]]; then
                                printf '\n%s@%s\t%s\n' "${MODULE}" "$(date -u '+%FT%TZ')" "${REPLY}" >> "${LOGFILE}";
                                clear > "${TTY}";
                                tail -v -n "${TAILN}" "${LOGFILE}";
                        fi;
                ;;
        esac;
done;