Tuesday, 24 December 2013

How to create the swap file in Red hat Linux

Hello Friends I am Deepak Saini And today I am trying to expalin the uses of the swap file in the red hat linux
So lets start

Swap File :- when we are required temporary  swap partion then we are create the swap file we are not create the swap partion on our system.

How create the swap file  on Linux 
 Setups 
1 We are creating the dump file fr swap partion .
syntax:- dd if=/dev/zero of=/<filename> bs-1M count=1024 

 In this dd for dump file,file name is the swap file name

the total size of swap file is 
  ds * count 
means ds =1M (m for mb )
           count = 1024 
 the total size of swap file in my case is 1024mb

2 For check the size of swap file
 syntax:- du -h  <path of swap file>

make the swap file
syntax:- mkswap <path of swap file>


we are swap on
  syntax :- swapon <path of swap file>

5 for checking the swap file is working or not
syntax :- cat /proc/swpas

How to remove the swap file 

trun of the swap
syntax:- swap off <path of swap file>


2 Remove the swap file 
 rm -f <path of swap file>  

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