# phpman > man > CGSNAPSHOT(1)


[CGSNAPSHOT(1)](https://www.chedong.com/phpMan.php/man/CGSNAPSHOT/1/markdown)                             libcgroup Manual                             [CGSNAPSHOT(1)](https://www.chedong.com/phpMan.php/man/CGSNAPSHOT/1/markdown)



## NAME
       cgsnapshot - generate the configuration file for given controllers


## SYNOPSIS
       **cgsnapshot** [**-h**] [**-s**] [**-t**] [**-b** _file_] [**-w** _file_] [**-f** _output_file_] [**controller**] [...]


## DESCRIPTION
       **cgsnapshot**  generates  the  cgconfig compatible configuration file for the given controllers.
       If no controller is set, then cgsnapshot shows all mounted hierarchies.  The output is in the
       same format as the **cgconfig.conf** configuration file.


### -b file
              Display  only  variables from the blacklist.  The default location of the blacklist is
              **/etc/cgsnapshot**___**blacklist.conf.**  This list contains all variables which should be  ig‐
              nored  by the **cgsnapshot** If the variable is blacklisted, it will not be displayed.  If
              it is not present on the blacklist, the whitelist is checked.


### -h, --help
              display this help and exit


### -f, --file
              Redirect the output to output_file



### -s, --silent
              Ignore all warnings


### -t, --strict
              Do not display the variables which are not on the whitelist



### -w file
              Set the blacklist configuration file.  This list contains all variables  which  should
              be  displayed  by  **cgsnapshot**  If  the  variable  is not blacklisted, the whitelist is
              checked.  If the variable is on the whitelist, it is displayed by  **cgsnapshot**  If  the
              variable  is  not on the whitelist, the variable is displayed and a warning message is
              produced.  By default the whitelist is not used.

              The warning message can be omitted using the **-s,** **--silent** flag.  If the  **-t,**  **--strict**
              flag is used, the variable which is not on the whitelist is not displayed.


### controller
              defines the controller whose hierarchies will be output


## ENVIRONMENT VARIABLES
       **CGROUP**___**LOGLEVEL**
              controls verbosity of the tool. Allowed values are **DEBUG**, **INFO**, **WARNING** or **ERROR**.


## FILES
       **/etc/cgsnapshot**___**blacklist.conf**
              default blacklist


       **/etc/cgsnapshot**___**whitelist.conf**
              default whitelist


### /etc/cgconfig.conf
              default libcgroup configuration file


## EXAMPLES
### cgsnapshot -s -f /etc/cgconfig.conf.cgsnapshot
              create  configuration  file  which  contains  all  mounted controllers and all control
              groups which are on the actual system


### cgsnapshot -s -f /etc/cgconfig.conf.cgsnapshot cpu
              create configuration file which contains hierarchy containing cpu controller  and  all
              its control groups on the actual system




## SEE ALSO
       cgconfig.conf (5)



Linux                                        2010-07-28                                [CGSNAPSHOT(1)](https://www.chedong.com/phpMan.php/man/CGSNAPSHOT/1/markdown)