if=/dev/zero : Read from /dev/zero file. /dev/zero is a special file,in that provides as many null characters to build storage file called /swapfile.
of=/swapfile : Read from /dev/zero write storage file to /swapfile.
bs=1024 : Read and write 1024 BYTES bytes at a time.
count=1024 : Copy only 1024 BLOCKS input blocks.
To setup a linux swap area in a file.
Enable the swap file.
Disable the swap file.
Determine the size of the new swap file in megabytes and multiply by 1024 to determine the number of blocks. For example, the block size of a 64 MB swap file is 65536.
lvextend -l +100 /logical/volume00
Extend the logical volume 00 from blank space i.e. 0mb to volume 00 with 100 mb...
GUI (Graphical mode) to text mode i.e. CLI(Command Line Interface)
Text to graphic mode
Types Of Boot Loader
grub grand unified boot loader
lilo linux bootloader
Configure the kde enviroment
Configure the gnome enviroment
Set the default startup to kde
Set the default startup to gnome
Configure the red hat for update
mount /dev/sda1 /tmpdir mount the sda1 file in tmpdir directory mount /dev/sda0 /tmpdir mount the sda0 file in tmpdir directory unmount /tmpdir/boot unmount boot directory unmount /tmpdir unmunt tmpdir directory
Sync the changed or changes take effect
Will show the running process list
Show the graphical mode of running process
Show how long the system is running from last boot and
load average of first no show the the total load in last one minute
load average of second no show the the total load in last five minute
load average of third no show the the total load in last fifteen minute