NBash

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#!/bin/sh
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#
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# Copyright (C) 2016, 2020  Etersoft
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# Copyright (C) 2016, 2020  Vitaly Lipatov <lav@etersoft.ru>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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__serv_log_altlinux()
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{
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    local SERVICE="$1"
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    local PRG="less"
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    [ "$2" = "-f" ] && PRG="tail -f"
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    case "$SERVICE" in
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        postfix)
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            sudocmd $PRG /var/log/mail/all /var/log/mail/errors
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            ;;
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        sshd)
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            sudocmd $PRG /var/log/auth/all
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            ;;
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        cups)
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            sudocmd $PRG /var/log/cups/access_log /var/log/cups/error_log
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            ;;
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        fail2ban)
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            sudocmd $PRG /var/log/$SERVICE.log
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            ;;
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        *)
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            fatal "Have no suitable for $SERVICE service"
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            ;;
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    esac
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}
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serv_log()
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{
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    local SERVICE="$1"
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    shift
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    case $SERVICETYPE in
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        systemd)
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            sudocmd journalctl -b -u "$SERVICE" "$@"
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            ;;
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        *)
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            case $BASEDISTRNAME in
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            "alt")
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                FF="" ; [ "$1" = "-f" ] && FF="-f"
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                __serv_log_altlinux "$SERVICE" $FF
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                return ;;
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            *)
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                fatal "Have no suitable for $DISTRNAME command for $SERVICETYPE"
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                ;;
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            esac
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    esac
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}
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