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Full Discussion: Problem in file usage option
Top Forums Shell Programming and Scripting Problem in file usage option Post 302465296 by sanjay.login on Friday 22nd of October 2010 04:27:18 AM
Old 10-22-2010
Hi puni,

no ,it is not correct that the access time is newer than modified time,it depends upon the time you access.

ex
Code:
 cat >test1
this is test1 file

[biswa@dhcppc0 ~]$ cat test1
this is test1 file
[biswa@dhcppc0 ~]$ ls -lt test1
-rw-rw-r-- 1 biswa biswa 19 Oct 22 13:45 test1
[biswa@dhcppc0 ~]$ ls -lu test1
-rw-rw-r-- 1 biswa biswa 19 Oct 22 13:45 test1
[biswa@dhcppc0 ~]$ cat test1u
this is test1 file                                   ----------you accessed here so next access time is changed [biswa@dhcppc0 ~]$ ls -lu test1
-rw-rw-r-- 1 biswa biswa 19 Oct 22 13:46 test1
[biswa@dhcppc0 ~]$ ls -lt test1  -------------------but modified time unchanged
-rw-rw-r-- 1 biswa biswa 19 Oct 22 13:45 test1
[biswa@dhcppc0 ~]$ cat>>test1-----------now you appened means modified so the modtimechang
hello 
[biswa@dhcppc0 ~]$ ls -lt test1
-rw-rw-r-- 1 biswa biswa 25 Oct 22 13:47 test1
[biswa@dhcppc0 ~]$ ls -lu test1
-rw-rw-r-- 1 biswa biswa 25 Oct 22 13:46 test1



hope you will get it

Regards,
sanjay
 

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LEARN ABOUT CENTOS

cgexec

CGEXEC(1)							 libcgroup Manual							 CGEXEC(1)

NAME

       cgexec - run the task in given control groups

SYNOPSIS

       cgexec [-h] [-g <controllers>:<path>] [--sticky] command [arguments]

DESCRIPTION

       The cgexec program executes the task command with arguments arguments in the given control groups.

       -g <controllers>:<path>
	      defines  the  control  groups  in which the task will be run.  controllers is a list of controllers and path is the relative path to
	      control groups in the given controllers list.

	      This flag can be used multiple times to define multiple pairs of lists of controllers and relative paths.  Instead of  the  list	of
	      all mounted controllers, the wildcard b"*b" can be used.

	      If this option is not used, cgexec will automatically place the task in the right cgroup based on /etc/cgrules.conf.

	      If  /etc/cgrules.conf  configuration file is used, there can be used template names. Then the control group name contains a template
	      in destination tag (see cgrules.conf (5)) and if the cgroup does not exist in execution time, it is created,  based  on  /etc/cgcon-
	      fig.conf specification.  If the specifications are not present the group is created with the default kernel values.

       -h, --help
	      Display this help and exit.

       --sticky
	      If running the task command with this option, the daemon of service cgred (cgrulesengd process) does not change both the task of the
	      command and the child tasks. Without this option, the daemon does not change the task of the command but it changes the child  tasks
	      to the right cgroup based on /etc/cgrules.conf automatically.

EXAMPLES

       cgexec -g *:test1 ls
       runs command ls in control group test1 in all mounted controllers.

       cgexec -g cpu,memory:test1 ls -l
       runs command ls -l in control group test1 in controllers cpu and memory.

       cgexec -g cpu,memory:test1 -g swap:test2 ls -l
       runs command ls -l in control group test1 in controllers cpu and memory and control group test2 in controller swap.

ENVIRONMENT VARIABLES

       CGROUP_LOGLEVEL
	      controls verbosity of the tool. Allowed values are DEBUG, INFO, WARNING or ERROR.

FILES

       /etc/cgrules.conf
	      default libcgroup configuration file

SEE ALSO

       cgrules.conf (5)

Linux								    2009-03-15								 CGEXEC(1)
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