topic Re: problem with awk script.. in Operating System - HP-UX

problem with awk script..

amonamon — Thu, 14 Dec 2006 10:21:27 GMT

Hello I am trying to firure what is wrong with this script..but it does not work..here is what I tryed:
nawk -F"|" '
{ mo=substr($1,16,2)
day=substr($1,18,2)}
{print $15"|2007|"mo"|"day;} ' $1 > final

so basicly from my input file $1 with substring function I want to assign mo and day variable and have final file..
maybe it is not right pleace to assign mo and day in this part?? I am using KSH..

thanks..

Re: problem with awk script..

James R. Ferguson — Thu, 14 Dec 2006 10:32:11 GMT

Hi:

What doesn't work? Using your script and this input:

# echo "...............12142007"|./myscript

...yields:

|2007|12|14

...where './myscript' is as you wrote (using 'awk').

Regards!

...JRF...

Re: problem with awk script..

Peter Godron — Thu, 14 Dec 2006 10:37:23 GMT

Hi,
how about:
nawk -F"|" '{ mo=substr($0,16,2); day=substr($0,18,2)} {print $15"|2007|"mo"|"day;} ' $1 > final

May be helpful if you provided input and expected output.

Re: problem with awk script..

Peter Nikitka — Thu, 14 Dec 2006 10:52:55 GMT

Hi,

if Peter's tip is ($0 is the complete line of input) not what you mean: Do you want to extract the day+month information from the filename you supply?
Then use, use

nawk -F"|" 'FNR==1 {mo=substr(FILENAME,16,2)
day=substr(FILENAME,18,2)}
{print $15"|2007|"mo"|"day;}' in1 in2 .. >final

mfG Peter

Re: problem with awk script..

amonamon — Thu, 14 Dec 2006 11:06:26 GMT

Peter Nikitka that is what I wanted...Thanks a lot everyone..

Re: problem with awk script..

Sandman! — Thu, 14 Dec 2006 11:08:40 GMT

Can you provide sample input and how the output should look like?

Re: problem with awk script..

amonamon — Thu, 14 Dec 2006 11:20:30 GMT

again me...:(

now I have file1:

232323|2007|12|09
343434|2007|12|09
565656|2007|12|09
898989|2007|12|09
090909|2007|12|09
..
..

and file 2:

232323
343434
343433
343432
343431
..
..

My result that does not work OK with command grep -v -f file1 file2

and output should be:

232323|2007|12|09
343434|2007|12|09

thanks friends..

Re: problem with awk script..

James R. Ferguson — Thu, 14 Dec 2006 11:30:20 GMT

Hi (again):

# grep -f file2 file1

...you have the pattern file and the input file reversed and don't want the '-v'.

Regards!

...JRF...

Re: problem with awk script..

amonamon — Thu, 14 Dec 2006 11:33:40 GMT

hmmm i tryed both

grep: illegal option -- f
Usage: grep -hblcnsviw pattern file . . .

I got this error..

Re: problem with awk script..

Sandman! — Thu, 14 Dec 2006 12:07:29 GMT

How about using the join(1) command:

# join -1 1 -2 1 -t'|' -o 1.1 1.2 1.3 1.4 file1 file2

Re: problem with awk script..

spex — Thu, 14 Dec 2006 12:24:31 GMT

Hi,

Based on the grep error message you provided, it doesn't appear you're using HP-UX (SunOS, perhaps?).

If that's the case, try:

$ /usr/xpg4/bin/grep -f file2 file1

or:

$ grep `cat file2` file1

PCS

Re: problem with awk script..

amonamon — Mon, 18 Dec 2006 02:22:14 GMT

sandman it works..but I do not understand a code..I never worked with join..I am trying to gigure it in man join..but it goes slow..if U could explain little..

grep 'cat file1' file2 does not work..

thanks friends..

cheers..

Re: problem with awk script..

Sandman! — Mon, 18 Dec 2006 10:13:43 GMT

The join(1) example was based on the input you had provided, i.e.

file1:

232323|2007|12|09
343434|2007|12|09
565656|2007|12|09
898989|2007|12|09
090909|2007|12|09
..
..

file 2:

232323
343434
343433
343432
343431
..
..

# join -1 1 -2 1 -t'|' -o 1.1 1.2 1.3 1.4 file1 file2

The join(1) example above "glues" the two files (file1 and file2) together on the fields that are common to both...which is field 1 as shown by command line options -> "-1 1 -2 1".

The field separator is the pipe character -t'|' (needs to be escaped or quoted as it has special meaning to the shell, and the output should consist of all fields from the first file -> "-o 1.1 1.2 1.3 1.4".

imho...not sure why the grep command by JRF is not working for you. It works perfectly on my HP-UX box. Are you using HP-UX or some other variant?

~hope it helps

Re: problem with awk script..

Peter Nikitka — Mon, 18 Dec 2006 11:13:23 GMT

Hi,

of course JRF's solution works for Solaris as well - but you have to use the POSIX compliant binary:

/usr/xpg4/bin/grep -f file2 file1

mfG Peter

Re: problem with awk script..

amonamon — Tue, 19 Dec 2006 02:00:12 GMT

thanks..a lot

yes /usr/xpg4/bin/grep -f file2 file1
works fine on my solaris..

thanks guys,

cheers,