Answer / kumarsaneesh

To make a null file use touch command
eg.

$ touch file_name

use the following to make an existing file empty.

$ :> file_name

Answer / hyma

Using touch command to create null file

Answer / sandeep

1.by using touch
2.cat /dev/null>filename

any one can be used

Answer / murali thangavel

# touch <filename> ----> new empty file will create
# cat /dev/null> <filename> ---> existing file will empty
# > <filename> ---> existing file will empty

Answer / kitchimca

#using touch cmd
Ex:touch <filename>

#using cat cmd
Ex:cat /dev/null > <filename>

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