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Full Discussion: Empty file check
Top Forums Shell Programming and Scripting Empty file check Post 302890390 by Akshay Hegde on Wednesday 26th of February 2014 02:05:19 PM
Old 02-26-2014
This might help you

Code:
$ touch test1
$ cat test1
$ touch test2
$ echo 'I am not empty' >test2
$ cat test2
I am not empty

Code:
#!/bin/bash



empty(){
	for file in $(echo "$*"); do 
		[ -s  "$file"  ] || return 1
	done
}

# Call function with one empty and non empty file
empty test1 test2

if [ "$?" -eq "0" ]; then
	echo "all fine"
else
        echo "something went wrong"
fi 

# Call function with non empty files
empty test2 test2

if [ "$?" -eq "0" ]; then
	echo "all fine"
else
	echo "something went wrong"
fi

Code:
$ bash test
something went wrong
all fine

---------- Post updated at 01:35 AM ---------- Previous update was at 01:30 AM ----------

what I wanted to suggest you that create function like above according to your need and play with exit code it's easy.
 

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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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