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ac (8)
  • ac (1) ( Linux man: Команды и прикладные программы пользовательского уровня )
  • >> ac (8) ( FreeBSD man: Команды системного администрирования )

  • BSD mandoc
     

    NAME

    
    
    ac
    
     - connect time accounting
    
     
    

    SYNOPSIS

    [-dp ] [-t tty ] [-w wtmp ] [users ... ]  

    DESCRIPTION

    If the file /var/log/wtmp exists, a record of individual login and logout times are written to it by login(1) and init(8), respectively. The utility examines these records and writes the accumulated connect time (in hours) for all logins to the standard output.

    The options are as follows:

    -d
    Display the connect times in 24 hour chunks.
    -p
    Print individual users' totals.
    -t tty
    Only do accounting logins on certain ttys. The tty specification can start with '!' to indicate not this tty and end with '*' to indicate all similarly named ttys. Multiple -t flags may be specified.
    -w wtmp
    Read connect time data from wtmp instead of the default file, /var/log/wtmp
    users ...
    Display totals for the given individuals only.

    If no arguments are given, displays the total connect time for all accounts with login sessions recorded in wtmp

    The default wtmp file will increase without bound unless it is truncated. It is normally truncated by the daily scripts run by cron(8), which rename and rotate the wtmp files, keeping a week's worth of data on hand. No login or connect time accounting is performed if /var/log/wtmp does not exist.

    For example,

    ac -p -t "ttyd*" > modems
    ac -p -t "!ttyd*" > other
    

    allows times recorded in modems to be charged out at a different rate than other  

    FILES

    /var/log/wtmp
    connect time accounting file

     

    EXIT STATUS

    Ex -std  

    SEE ALSO

    login(1), utmp(5), init(8), sa(8)


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    FILES
    EXIT STATUS
    SEE ALSO


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