grep help, how do i rewrite this

weezybaby · #1 (**permalink**) 01-31-2008

Thanks , franklin you method worked, i knew i had to use a while loop and getline in there just didnt know the proper order

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

Franklin52 · #2 (**permalink**) 01-31-2008

With awk you can do something like this:

Code:

awk '
FNR==NR{arr[$1]=$1;next}
!arr[$1]{print}
' "datafile.txt" "numbers.txt"

Regards

Tytalus · #3 (**permalink**) 01-31-2008

Code:

#  cat numbers.txt

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

#  cat exclude.file
^a
^the
^or



#   /usr/xpg4/bin/grep -v -f exclude.file numbers.txt

hi how are you
what are you doing
yes sir

weezybaby · #4 (**permalink**) 01-31-2008

alright ll give it a try

Franklin52 · #5 (**permalink**) 01-31-2008

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

Quote:

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:

Code:

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

Regards

weezybaby · #6 (**permalink**) 01-31-2008

Thanks I almost got the same thing, just had some syntax issue that you have corrected . Thank you once again

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
How to rewrite a line in a file	c0384	Shell Programming and Scripting	21	05-22-2007 02:06 AM
How do I rewrite to use a while instead of find?	goodmis	Shell Programming and Scripting	4	02-06-2007 02:20 PM
Make grep -c display like grep -n?	Jerrad	Shell Programming and Scripting	2	08-25-2006 12:20 AM
rewrite the same info in 3 different files	strok	Shell Programming and Scripting	6	03-29-2003 01:50 PM
Apache Rewrite help!	hassan2	UNIX for Advanced & Expert Users	1	11-11-2002 01:35 PM

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode	Rate This Thread:


	Powered by