Help plz

[Psy-[A]]

Well first of all i'm new here so
What'zzzzzz  PPL

i did a script that write in to txt file and i don't know what is the command that can del a line in the txt
well i want it to del the first line in the txt not the last one

if someone will tell me what is the command i will be greatfull

well that is what i need i hope u can all help me and 10x anyway
 ;)

[Psy-[A]]

for example

the txt going like this

------------------------------------
hey ppl what's up
blablabl;a
bla bla bla bla
bababababa
babababba
-------------------------------------
and after the command it will go like this
------------------------------------
blablabl;a
bla bla bla bla
bababababa
babababba
-------------------------------------

sorry for the english and thanks again