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Pastreaza un log al login-urilor si logout-urilor E-mail
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Rating: 3.0/5 (2 votes cast)

Scris de Cypress   
Thursday, 22 November 2007
#!/bin/bash
##########################################################################
# Title      :    einlog - keep a log file of login and logout time stamps
# Author     :    Heiner Steven < Aceasta adresa e-mail este protejata impotriva spamului, JavaScript trebuie activat pentru a putea vizualiza pagina. >
# Date       :    1993-12-10
# Requires   :   
# Category   :    Desktop
# SCCS-Id.   :    @(#) einlog    1.9 05/08/29
##########################################################################
# Description
#    Keep a log file of the first and the last login
# See also
#    logstat
##########################################################################

PN=`basename "$0"`            # Program name
VER='1.9'

: ${LOGFILE:=$HOME/lib/log}
: ${TMPDAT:=/tmp/log.$$}
lock=$LOGFILE.lock

DateForm='%Y-%m-%d %H:%M (%a)'
Date=`LANG=C date '+%Y-%m-%d'`
currenttime=`LANG=C date "+$DateForm"`

usage () {
    echo >&2 "$PN - keep a log file of login and logout time stamps, $VER
usage: $PN {-i | -o}
    -i:    log in
    -o: log out

Log file:
    $LOGFILE"
    exit 1
}

msg () {
    for msgLine
    do echo "$PN: $msgLine" >&2
    done
}

fatal () { msg "$@"; exit 1; }

set -- `getopt :haeio "$@" || exit 1` || usage
[ $# -lt 1 ] && usage            # "getopt" detected an error

Mode=login                # {login|logout}
while [ "$#" -gt 0 ]
do
    case "$1" in
    -i|-e)    Mode=login;;
    -o|-a)    Mode=logout;;
    --)    shift; break;;
    -h)    usage;;
    -*)    usage;;
    *)    break;;            # First file name
    esac
    shift
done

# System V date command preferred
PATH="/usr/5bin:$PATH"    export PATH

if mkdir "$lock" >/dev/null 2>&1
then
    # Aquired lock. Remove it when the program terminates, or after
    # reception of a signal.

    trap 'rmdir "$lock" >/dev/null 2>&1' 0
    trap "exit 2" 1 2 3 13 15
else
    fatal "could not create lock: $lock"
fi

if [ -f "$LOGFILE" ]
then
    :
else
    cat <<-! > "$LOGFILE"
    # log - login and logout times (first and last login)
    # created `date +"$DateForm"`

    !
    chmod 600 "$LOGFILE"
fi

# Only one entry per day. Always add an "EIN" entry if it does not exist
# already.

grep "EIN: $Date" < "$LOGFILE" > /dev/null ||
  echo "EIN: $currenttime
AUS: $currenttime" >> "$LOGFILE"

case "$Mode" in
    login)
    # "EIN" record was already written.
    ;;

    logout)
        # Keep file time stamp by copying it using "cp -p"
    cp -p "$LOGFILE" "$TMPDAT" ||
        fatal "cannot create temporary file: $TMPDAT"
    {
        grep -v "AUS:.* $Date" < "$LOGFILE"     # once per day
        echo "AUS: $currenttime"
    } > "$TMPDAT" &&
        mv -f "$TMPDAT" "$LOGFILE"
    ;;

    *)
        usage
    ;;
esac

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Copyright (C) 2007 Alain Georgette / Copyright (C) 2006 Frantisek Hliva. All rights reserved.
 

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