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How to store values into variable in perl
Post 302191645 by chittiprasad15 on Sunday 4th of May 2008 03:34:25 AM
05-04-2008
How to store values into variable in perl
Hi,
Can you please help me of how to store the values into variables.
Here is the output in LINUX for the below command.
$free
output :
total used free
Mem: 3079276 3059328 19948
Swap: 1023992 6324 1017668
while i am trying the below commands i got the ouput
free |grep "Mem:" |awk ' {print $2}'
output for the above cmd is printing == 3079276
similar to the swap as well..
But i want to store the ouput value in a variable
I also decalred the variable like this
$Memory=`free |grep "Mem:" |awk ' {print $2}'`;
print "$Memory ";
It is printing like this
Mem: 3079276 3059328 19948
Can anyone please help me regarding this how to store the values into variables....
Can you please help me of how to store the values into variables.
Here is the output in LINUX for the below command.
$free
output :
total used free
Mem: 3079276 3059328 19948
Swap: 1023992 6324 1017668
while i am trying the below commands i got the ouput
free |grep "Mem:" |awk ' {print $2}'
output for the above cmd is printing == 3079276
similar to the swap as well..
But i want to store the ouput value in a variable
I also decalred the variable like this
$Memory=`free |grep "Mem:" |awk ' {print $2}'`;
print "$Memory ";
It is printing like this
Mem: 3079276 3059328 19948
Can anyone please help me regarding this how to store the values into variables....
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LEARN ABOUT REDHAT
variable
variable(n) Tcl Built-In Commands variable(n) __________________________________________________________________________________________________________________________________________________ NAME
variable - create and initialize a namespace variable SYNOPSIS
variable ?name value...? name ?value? _________________________________________________________________ DESCRIPTION
This command is normally used within a namespace eval command to create one or more variables within a namespace. Each variable name is initialized with value. The value for the last variable is optional. If a variable name does not exist, it is created. In this case, if value is specified, it is assigned to the newly created variable. If no value is specified, the new variable is left undefined. If the variable already exists, it is set to value if value is specified or left unchanged if no value is given. Normally, name is unqualified (does not include the names of any containing namespaces), and the variable is created in the current namespace. If name includes any namespace qualifiers, the variable is created in the specified names- pace. If the variable is not defined, it will be visible to the namespace which command, but not to the info exists command. If the variable command is executed inside a Tcl procedure, it creates local variables linked to the corresponding namespace variables (and therefore these variables are listed by info locals.) In this way the variable command resembles the global command, although the global command only links to variables in the global namespace. If any values are given, they are used to modify the values of the associated namespace variables. If a namespace variable does not exist, it is created and optionally initialized. A name argument cannot reference an element within an array. Instead, name should reference the entire array, and the initialization value should be left off. After the variable has been declared, elements within the array can be set using ordinary set or array commands. SEE ALSO
global(n), namespace(n), upvar(n) KEYWORDS
global, namespace, procedure, variable Tcl 8.0 variable(n)