# sa1(8) - man - phpMan

[SA1(8)](https://www.chedong.com/phpMan.php/man/SA1/8/markdown)                                   Linux User's Manual                                  [SA1(8)](https://www.chedong.com/phpMan.php/man/SA1/8/markdown)



## NAME
       sa1 - Collect and store binary data in the system activity daily data file.


## SYNOPSIS
       **/usr/lib/sysstat/sa1** **[** **--boot** **|** **--rotate** **[** **iso** **]** **|** **--sleep** **|** _interval_ _count_ **]**


## DESCRIPTION
       The **sa1** command is a shell procedure variant of the **sadc** command and handles all of the flags
       and parameters of that command. The **sa1** command collects and stores binary data in  the  cur‐
       rent standard system activity daily data file.

       The  standard  system activity daily data file is named _saDD_ unless **sadc**'s option **-D** is used,
       in which case its name is _saYYYYMMDD_, where _YYYY_ stands for the current year, _MM_ for the cur‐
       rent  month  and _DD_ for the current day. By default it is located in the _/var/log/sysstat_ di‐
       rectory.

       The _interval_ and _count_ parameters specify that the record should be written  _count_  times  at
       _interval_ seconds. If no arguments are given to **sa1** then a single record is written.

       The **sa1** command is designed to be started automatically by the **cron** command.


## OPTIONS
       **--boot** This  option  tells  **sa1** that the **sadc** command should be called without specifying the
              _interval_ and _count_ parameters in order to insert a dummy record, marking the time when
              the counters restart from 0.

### --rotate [ iso ]
              Use this option to tell **sa1** to insert a record of statistics to the standard _saDD_ sys‐
              tem activity daily data file of the previous day.  This should be done  shortly  after
              midnight  (on day DD+1) in order to make sure that the data file covers the whole day,
              including the last interval of time just before  midnight.   Adding  the  **iso**  keyword
              tells **sa1** to use _saYYYYMMDD_ instead of _saDD_ as the standard system activity daily data
              file name.

### --sleep
              This option tells **sa1** that the **sadc** command should insert a  comment  indicating  that
              the system is entering or leaving sleep mode (i.e. system suspend or hibernation).


## EXAMPLE
       To  collect  data (including those from disks) every 10 minutes, place the following entry in
       your root crontab file:

       **0,10,20,30,40,50** ***** ***** ***** ***** **/usr/lib/sysstat/sa1** **1** **1** **-S** **DISK**

       To rotate current system activity daily data file, ensuring it is complete, place the follow‐
       ing entry in your root crontab file:

       **0** **0** ***** ***** ***** **/usr/lib/sysstat/sa1** **--rotate**


### Debian note
       The  Debian  sysstat package has already placed such an entry in your system crontab.  Please
       refer to the _/usr/share/doc/sysstat/README.Debian_ file for details.


## FILES
       _/var/log/sysstat/saDD_
       _/var/log/sysstat/saYYYYMMDD_
              The standard system activity daily data files and their default location.  _YYYY_ stands
              for the current year, _MM_ for the current month and _DD_ for the current day.


## AUTHOR
       Sebastien Godard (sysstat <at> orange.fr)


## SEE ALSO
       [**sar**(1)](https://www.chedong.com/phpMan.php/man/sar/1/markdown), [**sadc**(8)](https://www.chedong.com/phpMan.php/man/sadc/8/markdown), [**sa2**(8)](https://www.chedong.com/phpMan.php/man/sa2/8/markdown), [**sadf**(1)](https://www.chedong.com/phpMan.php/man/sadf/1/markdown), [**sysstat**(5)](https://www.chedong.com/phpMan.php/man/sysstat/5/markdown)

       _<https://github.com/sysstat/sysstat_>
       _<http://pagesperso-orange.fr/sebastien.godard/_>



Linux                                       NOVEMBER 2020                                     [SA1(8)](https://www.chedong.com/phpMan.php/man/SA1/8/markdown)