UNIX for Dummies Questions & Answers

Hi,

I have a file with the following contents:

COMPANY ABCD
TRUCKER JOE SMITH
TRUCK 456
PLATE A12345678
TRUCKER BILL JONES
TRUCK 789
PLATE B7894561

I need to create a script or search command that will search for this string '789' in the file. This string is unique and only occurs in the 'TRUCK' record. Once it finds the string, I would like it to return the first occurrence of COMPANY above the string (since there can be many more instances above). And I would also like to return the record immediately after the search, which would be PLATE.

EXAMPLE:

COMPANY ABCD
TRUCK 789
PLATE B7894561

Any help is appreciated.

nawk -f doza.awk myFile

doza.awk:

Code:

/^COMPANY / {comp=$0; next}
$2 == "789" { num=$0; c=1; next}
c&&c-- { print comp ORS num ORS $0 }

Thank you for the fast response. However 'nawk' is not available on my UNIX system. (HP-UX)

Can I use a different command?

'awk' or 'gawk' should do

The 'awk' command worked and returned the intended results!

Thanks again for the fast response!

Chris

Sorry to bother again, but is there a way to pass the awk script the search string?

Instead of '789', can I pass, '456' or another value to the script?

nawk -v pat=456 -f doza.awk myFile

Code:

/^COMPANY / {comp=$0; next}
$2 == pat { num=$0; c=1; next}
c&&c-- { print comp ORS num ORS $0 }