Read record from the text file contain multiple separated values & assign those values to variables


 
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# 8  
Old 03-06-2014
I'm guessing you referring to this line:
Code:
file_name[${#file_name[@]}]=$line

${#file_name[@]} returns the number of elements in the file_name array

i.e. zero when the array is empty; 1 when it contains 1 element; etc.

Since arrays are indexed from zero this is ideal for appending:
When it is empty we assign the first array element (i.e. element number zero)
When it has 1 element we assign the second array element (i.e. element number 1).
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CGGET(1)							 libcgroup Manual							  CGGET(1)

NAME
cgget - print parameter(s) of given group(s) SYNOPSIS
cgget [-n] [-v] [-r <name>] [-g <controller>] [-a] <path> ... cgget [-n] [-v] [-r <name>] -g <controller>:<path> ... DESCRIPTION
Prints the parameter(s) of input cgroup(s). If neither controller nor variable are specified, the values of all possible variables are displayed. <path> is the name of the cgroup which should be read. This parameter can be used multiple times. -a, --all print the variables for all controllers which consist in the given cgroup -g <controller> defines controller which values should be displaied. This option can be used multiple times. -g <controller>:<path> defines control groups which values should be displaied. This option can be used multiple times. -h, --help display help and exit -n do not print headers, i.e. names of groups. -r, --variable <name> defines parameter to display. This option can be used multiple times. -v, --values-only print only values, not parameter names. EXAMPLES
$ cgget -r cpuset.cpus -r cpuset.mems first second first: cpuset.cpus=0-1 cpuset.mems=0 second: cpuset.cpus=0 cpuset.mems=0 $ cgget -n -r cpuset.cpus -r cpuset.mems first second cpuset.cpus=0-1 cpuset.mems=0 cpuset.cpus=0 cpuset.mems=0 $ cgget -nv -r cpuset.cpus -r cpuset.mems first second 0-1 0 0 0 $ cgget -n -g cpu / cpu.rt_period_us=1000000 cpu.rt_runtime_us=950000 cpu.shares=1024 SEE ALSO
cgsules.conf (1), cgcreate (1), cgget (1) Linux 2010-01-18 CGGET(1)