grep help, how do i make this shorter?

[weezybaby]

Hi everyone, im trying to make the following command line shorter by introducing a script that join up all the grep commands

./new1a < numbers.txt | grep -i -v '^a ' | grep -i -v '^the ' | grep -i -v '^or ' | sort -f

How would I go about merging all the greps into a scripe and putting all the words that should be excluded into a data file

or i could use the awk command that franklin suggested, something like

awk '
while(stdin == FILE > 0 ) {
stdin[$1] = $1
}
}
!stdin[$1]{print}
' "datafile.txt"

edit: nvm franklin got it the same way

[ghostdog74]

show how your numbers.txt look like, and also describe how you want to final output to be

[weezybaby]

numbers.txt have words not numbers sorry


like
---numbers.txt---
hi how are you
what are you doing
or am i sleeping
the zebra ate the lion
yes sir
a banana fell
------------------


So I Would want to remove the lines that start with or, the, a so in the above file, line 3,4,and 6 would be removed. Thanks

The rest of the file should remain unchanged

[extremelinuxfan]

first thing I would try about making this shorter was to only call grep once, and then use subexpression.
That is the easiest way to start something like
grep (-i -v ^the| -i -v ^or| -i -v ^a) instead of calling grep multiply times, and beyond this I cannot help - I know not so much myself yet....
But that is the more obvious way to go

[weezybaby]

alright i made it shorter, and this works, but what do i do if i have a txt file that has more words i want to exclude? like -- and, if, you, etc etc

./new < numbers.txt | grep -i -v '^a \|^the \|^or ' | sort -f

looks like grep is not so good to make it for a list, so im going to work with the awk, seeing you can do actual programming in it

[Franklin52]

See the solution below.

Regards

[Franklin52]

The OP deleted his question, for clarity, this was the request:

Output of his command "./new < numbers.txt ":

hi how are you
what are you doing
or am i sleeping
the zebra ate the lion
yes sir
a banana fell

File datafile.txt:

a
the
or

Desired output:

hi how are you
what are you doing
yes sir

Try this:

./new < numbers.txt | awk '
  BEGIN{while(getline < "datafile.txt" > 0 ) {
    arr[$1]=$1
  }
  close("datafile.txt")
}
!arr[$1]{print}
'

Regards

[weezybaby]

cool, thanks frank i actually spend like 5 hours and finally got it working, and i check back here and you have almost same thing but better..what a waste of time lool, but i did learn alot

thanks